Gordon, B. (1985). Astrophotography: Featuring the fx system of exposure determination (2nd ed., Revised and enlarged.). Willmann-Bell Inc..
Chicago Style (17th ed.) CitationGordon, Barry. Astrophotography: Featuring the Fx System of Exposure Determination. 2nd ed., Revised and enlarged. Richmond, Va.: Willmann-Bell Inc., 1985.
MLA citiranjeGordon, Barry. Astrophotography: Featuring the Fx System of Exposure Determination. 2nd ed., Revised and enlarged. Willmann-Bell Inc., 1985.
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