Dyfyniad APA

Cassidy, J., Roettger, D., & Wixson, K. K. (1987). Reaching high. Scribner Educational Publishers.

Dyfyniad Arddull Chicago

Cassidy, Jack, Doris Roettger, and Karen K. Wixson. Reaching High. New York: Scribner Educational Publishers, 1987.

Dyfyniad MLA

Cassidy, Jack, et al. Reaching High. Scribner Educational Publishers, 1987.

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