Παραπομπή APA

Baturin, G. N. (1990). Phosphorites on the sea floor. Geological society.

Παραπομπή Chicago Style

Baturin, G. N. Phosphorites on the Sea Floor. London: Geological society, 1990.

Παραπομπή MLA

Baturin, G. N. Phosphorites on the Sea Floor. Geological society, 1990.