Dyfyniad APA

Lyon, W., & Duke, B. J. (1981). Introduction to human services. Reston Pub. Co.

Dyfyniad Arddull Chicago

Lyon, William, and Bill J. Duke. Introduction to Human Services. Reston, Va: Reston Pub. Co, 1981.

Dyfyniad MLA

Lyon, William, and Bill J. Duke. Introduction to Human Services. Reston Pub. Co, 1981.

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