Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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