APA
Oehser P. H., National Geographic Society (U.S.), . (198083). Research reports. Washington, D.C: National Geographic Society.
Chicago
Oehser Paul H, National Geographic Society (U.S.), . 198083. Research reports. Washington, D.C: National Geographic Society.
Harvard
Oehser P. H., National Geographic Society (U.S.), . (198083). Research reports. Washington, D.C: National Geographic Society.
MLA
Oehser Paul H, National Geographic Society (U.S.), . Research reports. Washington, D.C: National Geographic Society. 198083.
