Dyfyniad APA

SHERTZER, B., & STONE, S. C. (1976). Fundamentals of guidance.--Ed.3. Houghton Mifflin Co.

Dyfyniad Arddull Chicago

SHERTZER, Bruce, and Shelley C. STONE. Fundamentals of Guidance.--Ed.3. Boston: Houghton Mifflin Co, 1976.

Dyfyniad MLA

SHERTZER, Bruce, and Shelley C. STONE. Fundamentals of Guidance.--Ed.3. Houghton Mifflin Co, 1976.

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