Dyfyniad APA

Allendoerfer, C. B. (1971). Principles of arithmetic and geometry for elementary school teachers. Macmillan.

Dyfyniad Arddull Chicago

Allendoerfer, Carl B. Principles of Arithmetic and Geometry for Elementary School Teachers. New York: Macmillan, 1971.

Dyfyniad MLA

Allendoerfer, Carl B. Principles of Arithmetic and Geometry for Elementary School Teachers. Macmillan, 1971.

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