Friedberg, R., & Friedberg, R. (1958). Gold coins of the world: Complete from 600 A.D. to 1958 : an illustrated standard catalogue with valuations. New York, New York: Coin and Currency Institute.
Chicago Style CitationFriedberg, Robert, and Robert Friedberg. Gold Coins of the World: Complete From 600 A.D. to 1958 : An Illustrated Standard Catalogue With Valuations. New York, New York: Coin and Currency Institute, 1958.
MLA CitationFriedberg, Robert, and Robert Friedberg. Gold Coins of the World: Complete From 600 A.D. to 1958 : An Illustrated Standard Catalogue With Valuations. New York, New York: Coin and Currency Institute, 1958.
Warning: These citations may not always be 100% accurate.