APA (7e ed.) Bronvermelding

Bowen, Z. P. (1967). Brachiopoda of the Keyser Limestone (Silurian-Devonian) of Maryland and adjacent areas. Geological Society of America.

Chicago (17e ed.) Bronvermelding

Bowen, Zeddie Paul. Brachiopoda of the Keyser Limestone (Silurian-Devonian) of Maryland and Adjacent Areas. [New York]: Geological Society of America, 1967.

MLA (9e ed.) Bronvermelding

Bowen, Zeddie Paul. Brachiopoda of the Keyser Limestone (Silurian-Devonian) of Maryland and Adjacent Areas. Geological Society of America, 1967.