Dyfyniad APA

Stevens, F. L., Butler, T., & Stevens, A. T. C. (1910). A practical arithmetic. Charles Scribner's Sons.

Dyfyniad Arddull Chicago

Stevens, F. L., Tait Butler, and A. T. Chapman Stevens. A Practical Arithmetic. New York: Charles Scribner's Sons, 1910.

Dyfyniad MLA

Stevens, F. L., et al. A Practical Arithmetic. Charles Scribner's Sons, 1910.

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