Gaya APA

Freeman, Marcia S.. (2009). Rourke's World of Science Encyclopedia Vol. 4 (Volume 4). Florida: Rourke Publishing.

Gaya Chicago

Freeman, Marcia S.. Rourke's World of Science Encyclopedia Vol. 4. Volume 4 Florida: Rourke Publishing, 2009. Text.

Gaya MLA

Freeman, Marcia S.. Rourke's World of Science Encyclopedia Vol. 4. Volume 4 Florida: Rourke Publishing, 2009. Text.

Gaya Turabian

Freeman, Marcia S.. Rourke's World of Science Encyclopedia Vol. 4. Volume 4 Florida: Rourke Publishing, 2009. Print.