APA-Zitierstil (7. Ausg.)

Hamman, W., Robardet, M., & Romano, M. (1982). The ordovician system in Southwestern Europe: (France, Spain, and Portugal). JUGS Ed. Office.

Chicago-Zitierstil (17. Ausg.)

Hamman, Wolfgang, Michel Robardet, und Michael Romano. The Ordovician System in Southwestern Europe: (France, Spain, and Portugal). Ottawa, Ont: JUGS Ed. Office, 1982.

MLA-Zitierstil (9. Ausg.)

Hamman, Wolfgang, et al. The Ordovician System in Southwestern Europe: (France, Spain, and Portugal). JUGS Ed. Office, 1982.