APA (7th ed.) Citation

Johnson, G. R., & Platt, R. R. (1930). Peru from the air. American geographical society.

Chicago Style (17th ed.) Citation

Johnson, George R., and Raye R. Platt. Peru from the Air. New York: American geographical society, 1930.

MLA (9th ed.) Citation

Johnson, George R., and Raye R. Platt. Peru from the Air. American geographical society, 1930.