Cita APA (7a ed.)

Brock Hjalmar and Fjeld Per. (1940). Bird-Banding in Norway.

Cita Chicago Style (17a ed.)

Brock Hjalmar and Fjeld Per. Bird-Banding in Norway. -, 1940.

Cita MLA (8a ed.)

Brock Hjalmar and Fjeld Per. Bird-Banding in Norway. 1940.