1. Barthelmess, T. (2014), “What makes a good book cover?”, The Horn Book, available at: www.hbook.com/2014/03/choosing-books/horn-book-magazine/makesgood-book-cover/ (accessed January 12, 2017).
2. Bowker (2014a), “Traditional print book production dipped slightly in 2013”, Bowker, available at: www.bowker.com/news/2014/Traditional-Print-Book-Production-Dipped-Slightly-in-2013.html (accessed January 12, 2017).
3. Bowker (2014b), “Self-publishing continues to grow in U.S., Says Bowker”, Bowker, available at: www.bowker.com/news/2014/Self-Publishing-Continues-to-Grow-in-US-Says--Bowker.html (accessed January 12, 2017).
4. Sex differences in processing speed: developmental effects in males and females;Intelligence,2006
5. Factors influencing readers interest in new book releases: an experimental study;Poetics,2006