Gaya APA

F., S, L. (1938). A Catalogue of the Ammonites of the Liassic Family Liparoceratidae (1). : B. Quaritch, Ltd.

Gaya MLA

F., Spath, L.. "A Catalogue of the Ammonites of the Liassic Family Liparoceratidae". 1 : B. Quaritch, Ltd, 1938. Text.