Cita APA (7a ed.)

Riccardi, A. C. (1981). An Upper Cretaceous ammonite and inoceramids from the Honna Formation, Queen Charlotte Islands, British Columbia.

Cita Chicago Style (17a ed.)

Riccardi, Alberto Carlos. An Upper Cretaceous Ammonite and Inoceramids from the Honna Formation, Queen Charlotte Islands, British Columbia. 1981.

Cita MLA (8a ed.)

Riccardi, Alberto Carlos. An Upper Cretaceous Ammonite and Inoceramids from the Honna Formation, Queen Charlotte Islands, British Columbia. 1981.