Dyfyniad APA
ebrary, Inc, Martin, M. E., Straf, M. L., & Citro, C. F. (2005). Principles and practices for a federal statistical agency (3rd ed.). National Academy Press.
Dyfyniad Arddull Chicago
ebrary, Inc, Margaret E. Martin, Miron L. Straf, and Constance F. Citro. Principles and Practices for a Federal Statistical Agency. 3rd ed. Washington, D.C.: National Academy Press, 2005.
Dyfyniad MLA
ebrary, Inc, et al. Principles and Practices for a Federal Statistical Agency. 3rd ed. National Academy Press, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.