Cita APA (7th ed.)
Grosvenor, G. M. (1994). National Geographic (BAJA) (1a ed.). National Geographic Society.
Cita Chicago (17th ed.)
Grosvenor, Gilbert M. National Geographic (BAJA). 1a ed. Washington D.C.: National Geographic Society, 1994.
Cita MLA (9th ed.)
Grosvenor, Gilbert M. National Geographic (BAJA). 1a ed. National Geographic Society, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.