APA (7th ed.) Citation

Ryan, J. M. (1970). Area handbook for Nicaragua. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Ryan, John Morris. Area Handbook for Nicaragua. Washington, D.C: U.S. Government Printing Office, 1970.

MLA (9th ed.) Citation

Ryan, John Morris. Area Handbook for Nicaragua. U.S. Government Printing Office, 1970.