el-Basyier, Z. A. (2010). 5 Hari Asah Otak, Daya Ingat Setajam Silet! DIVA Press.
Chicago Style (17th ed.) Citationel-Basyier, Zainul Arifin. 5 Hari Asah Otak, Daya Ingat Setajam Silet! DIVA Press, 2010.
MLA (8th ed.) Citationel-Basyier, Zainul Arifin. 5 Hari Asah Otak, Daya Ingat Setajam Silet! DIVA Press, 2010.
Warning: These citations may not always be 100% accurate.