Gaya APA

PUTRA, J, E., TRIM, B. (2008). Becoming an entrepreneur is easy (cet. 1). Surabaya: Menuju Insan Cemerlang.

Gaya MLA

PUTRA, Julianto, Eka., TRIM, Bambang. "Becoming an entrepreneur is easy". cet. 1 Surabaya: Menuju Insan Cemerlang, 2008. Text.