APA (7th ed.) Citation

Armstrong, D. G., Boehm, R. G., & Hunkins, F. P. (1996). National geographic society. McGraw-Hill.

Chicago Style (17th ed.) Citation

Armstrong, David G., Richard G. Boehm, and Francis P. Hunkins. National Geographic Society. McGraw-Hill, 1996.

MLA (8th ed.) Citation

Armstrong, David G., et al. National Geographic Society. McGraw-Hill, 1996.