Cita APA (7a ed.)

Coker, W. C., & Petersen, R. H. (1973). The Clavarias of the United States and Canada. Cramer.

Cita Chicago Style (17a ed.)

Coker, William Chambers, y Ronald H. Petersen. The Clavarias of the United States and Canada. Lehre: Cramer, 1973.

Cita MLA (9a ed.)

Coker, William Chambers, y Ronald H. Petersen. The Clavarias of the United States and Canada. Cramer, 1973.