APA Style

Freeman, M, S., Sheehan, T, F. (2009). Rourke's world of science encyclopedia Volume 7 : Astronomy and space (Volume 7 : Astronomy and space). Florida: Kakilangit Kencana.

MLA Style

Freeman, Marcia, S.., Sheehan, Tom, F.. "Rourke's world of science encyclopedia Volume 7 : Astronomy and space". Volume 7 : Astronomy and space Florida: Kakilangit Kencana, 2009. Text.