APA ציטוט

Pehrson E. W. & Needyfv C. E. (1943). Minerals yearbook. 1942. Washington, United States Government Printing Office, 1943.

Chicago Style (17th ed.) Citation

Pehrson E. W. and Needyfv C. E. Minerals Yearbook. 1942. Washington, United States Government Printing Office, 1943, 1943.

ציטוט MLA

Pehrson E. W. and Needyfv C. E. Minerals Yearbook. 1942. Washington, United States Government Printing Office, 1943, 1943.