The document references various works related to sketching user experiences, including notable authors like Bill Buxton, Scott McCloud, Jared Spool, and Dan Roam. It highlights the importance of visualization in communication and understanding concepts through sketching. The sources listed provide insights into techniques and theories of effective sketching in design and user experience.

21. http://www.guidebookgallery.org/

22. http://www.guidebookgallery.org/

29. Bill Buxton, Sketching User Experiences, p111

30. Bill Buxton, Sketching User Experiences, p111

31. Bill Buxton, Sketching User Experiences, p111

32. Bill Buxton, Sketching User Experiences, p111

33. Bill Buxton, Sketching User Experiences, p111

34. Bill Buxton, Sketching User Experiences, p111

35. Bill Buxton, Sketching User Experiences, p111

36. Bill Buxton, Sketching User Experiences, p111

37. Bill Buxton, Sketching User Experiences, p111

38. Bill Buxton, Sketching User Experiences, p111

39. Bill Buxton, Sketching User Experiences, p111

40. Bill Buxton, Sketching User Experiences, p111

41. Bill Buxton, Sketching User Experiences, p114

42. Bill Buxton, Sketching User Experiences, p114

43. Bill Buxton, Sketching User Experiences, p114

44. Bill Buxton, Sketching User Experiences, p114

45. Bill Buxton, Sketching User Experiences, p114

46. Jason Ulaszek, Make Your Stick Figures Work Harder: The 3 C's of Sketching, s51

50. Scott McCloud, Understanding / Reinventing Comics

51. ____
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Scott McCloud, Understanding / Reinventing Comics

52. UXD _
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Scott McCloud, Understanding / Reinventing Comics

53. Jakub Linowski, http://vimeo.com/43869717

58. Scott McCloud, Understanding Comics, p51

59. Jared Spool, http://www.uie.com/articles/why_sketching/

60. Jared Spool, http://www.uie.com/articles/why_sketching/

61. Jared Spool, http://www.uie.com/articles/why_sketching/

62. Jared Spool, http://www.uie.com/articles/why_sketching/

63. Jared Spool, http://www.uie.com/articles/why_sketching/

64. Jared Spool, http://www.uie.com/articles/why_sketching/

66. Dan Roam, The back of the napkin

67. Dan Roam, The back of the napkin

68. Dan Roam, The back of the napkin

69. Dan Roam, The back of the napkin

70. Dan Roam, The back of the napkin

71. Dan Roam, The back of the napkin

72. Dan Roam, The back of the napkin

73. Dan Roam, The back of the napkin

74. …
David Sibbet, Visual Meetings