APA (7th ed.) Citation

Willumsen, G., Nye, B., & Kiley, R. (1999). 30 years of National Geographic specials. National Geographic ; Distributed by Warner Home Video.

Chicago Style (17th ed.) Citation

Willumsen, Gail, Barry Nye, and Richard Kiley. 30 Years of National Geographic Specials. [Washington, D.C.] : [U.S.?]: National Geographic ; Distributed by Warner Home Video, 1999.

MLA (9th ed.) Citation

Willumsen, Gail, et al. 30 Years of National Geographic Specials. National Geographic ; Distributed by Warner Home Video, 1999.