Gaya APA

dkk, S, B. (2015). Book of Knowledge: Negara-negara (Cet. 1). : 9.7898E+12.

Gaya MLA

dkk, Sue, Becklake. "Book of Knowledge: Negara-negara". Cet. 1 : 9.7898E+12, 2015. Text.