Gaya APA

Safra, J, E. (1998). The New Encyclopædia Britannica Propædia: Outline of Knowledge (Ed. 15). London: Encyclopædia Britannica, Inc..

Gaya MLA

Safra, Jacob, E.. "The New Encyclopædia Britannica Propædia: Outline of Knowledge". Ed. 15 London: Encyclopædia Britannica, Inc., 1998. Text.