Cita APA (7a ed.)

Claassen, P. W. (1939). A catalogue of the plecoptera of the world.

Cita Chicago Style (17a ed.)

Claassen, Peter Walter. A Catalogue of the Plecoptera of the World. Ithaca, New York : The University, 1939.

Cita MLA (9a ed.)

Claassen, Peter Walter. A Catalogue of the Plecoptera of the World. 1939.