APA-referens (7:e uppl.)

Weis, D., Kieffer, B., Hanano, D., Silva, I., Barling, J., Pretorius, W., . . . Mattielli, N. (2007). Hf isotope compositions of U.S. Geological survey reference materials.

Chicago-referens (17:e uppl.)

Weis, D., B. Kieffer, D. Hanano, I. Silva, J. Barling, W. Pretorius, C. Maerschalk, och N. Mattielli. Hf Isotope Compositions of U.S. Geological Survey Reference Materials. 2007.

MLA-referens (9:e uppl.)

Weis, D., et al. Hf Isotope Compositions of U.S. Geological Survey Reference Materials. 2007.