Gaya APA

Murray, F, W., Clissold, P. (1985). Astronomy Simply Explained (Ed. 7). United Kingdom: Brown, Son & Ferguson, Ltd., Publishers.

Gaya MLA

Murray, Frederick, W.., Clissold, P.. "Astronomy Simply Explained". Ed. 7 United Kingdom: Brown, Son & Ferguson, Ltd., Publishers, 1985. Text.