Gaya APA

Lukman, C., Worrall, M. (1995). Oxford Ensiklopedi Pelajar Jilid 3 : El Salvador-Jeram . Oxford: Oxford University Press.

Gaya MLA

Lukman, Cecilia., Worrall, Mary. "Oxford Ensiklopedi Pelajar Jilid 3 : El Salvador-Jeram". Oxford: Oxford University Press, 1995. Text.