APA
Georges J. a. G., . (1999). ROURKES' WORLD OF SCIENCE ENCYCLOPEDIA (ASTRONOMY AND SPACES). Florida, U.S.A Rourke corporation 1999: Florida, U.S.A Rourke corporation 1999.
Chicago
Georges Jason and Georges-Irons,Tracy, . 1999. ROURKES' WORLD OF SCIENCE ENCYCLOPEDIA (ASTRONOMY AND SPACES). Florida, U.S.A Rourke corporation 1999: Florida, U.S.A Rourke corporation 1999.
Harvard
Georges J. a. G., . (1999). ROURKES' WORLD OF SCIENCE ENCYCLOPEDIA (ASTRONOMY AND SPACES). Florida, U.S.A Rourke corporation 1999: Florida, U.S.A Rourke corporation 1999.
MLA
Georges Jason and Georges-Irons,Tracy, . ROURKES' WORLD OF SCIENCE ENCYCLOPEDIA (ASTRONOMY AND SPACES). Florida, U.S.A Rourke corporation 1999: Florida, U.S.A Rourke corporation 1999. 1999.
