Dyfyniad APA

Healey, J. F. (2007). The essentials of statistics: A tool for social research. Belmont, CA : Thomson/Wadsworth.

Dyfyniad Arddull Chicago

Healey, Joseph F. The Essentials of Statistics: A Tool for Social Research. Belmont, CA : Thomson/Wadsworth, 2007.

Dyfyniad MLA

Healey, Joseph F. The Essentials of Statistics: A Tool for Social Research. Belmont, CA : Thomson/Wadsworth, 2007.

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