Cita APA (7th ed.)

Oey, E. M. (1996). Sumatra: Island of adventure ([2nd ed.].). Passport Books.

Cita Chicago (17th ed.)

Oey, Eric M. Sumatra: Island of Adventure. [2nd ed.]. Lincolnwood, Ill: Passport Books, 1996.

Cita MLA (9th ed.)

Oey, Eric M. Sumatra: Island of Adventure. [2nd ed.]. Passport Books, 1996.