Dyfyniad APA

Johnson, R. R. (2008). Elementary statistics. Belmont, CA: Thomson Brooks/Cole.

Dyfyniad Arddull Chicago

Johnson, Robert Russell. Elementary Statistics. Belmont, CA: Thomson Brooks/Cole, 2008.

Dyfyniad MLA

Johnson, Robert Russell. Elementary Statistics. Belmont, CA: Thomson Brooks/Cole, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.