This document contains 3 summaries of a statistics document about book sales: 1. It provides sales data for 4 books from January 2012 to June 2013, including the book title, price, sales in each period, total sales, and royalties earned. 2. The total royalties earned from all books was Rp18,601,090, with a tax of Rp2,790,164, leaving net royalties of Rp15,810,927. 3. A bar graph shows the sales of each book by period, with the highest selling book being "Darah Perawan" and the lowest being "Namaiku Amanda".