APA-referens (7:e uppl.)

Siemens, R. E., Stickney, W. A., & Good, P. C. (1975). Recovery of nickel and cobalt from low-grade domestic laterites. U.S. Dept. of the Interior.

Chicago-referens (17:e uppl.)

Siemens, R. E., William Albert Stickney, och P. C. Good. Recovery of Nickel and Cobalt from Low-grade Domestic Laterites. Washington, D.C.: U.S. Dept. of the Interior, 1975.

MLA-referens (9:e uppl.)

Siemens, R. E., et al. Recovery of Nickel and Cobalt from Low-grade Domestic Laterites. U.S. Dept. of the Interior, 1975.