APA (7th ed.) Citation

(1972). Area handbook for Peru: Research and writing were completed March 1972. US Gov. Print. Off.

Chicago Style (17th ed.) Citation

Area Handbook for Peru: Research and Writing Were Completed March 1972. Washington, DC: US Gov. Print. Off, 1972.

MLA (9th ed.) Citation

Area Handbook for Peru: Research and Writing Were Completed March 1972. US Gov. Print. Off, 1972.