APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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