Dyfyniad APA

Shartle, C. L. (1952). Occupational information, its development and application. Prentice-Hall.

Dyfyniad Arddull Chicago

Shartle, Carroll Leonard. Occupational Information, Its Development and Application. Englewood Cliffs, NJ: Prentice-Hall, 1952.

Dyfyniad MLA

Shartle, Carroll Leonard. Occupational Information, Its Development and Application. Prentice-Hall, 1952.

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