Cita APA (7th ed.)

Doyle, R. E. (1992). Essential skills and strategies in the helping process. Brooks/Cole.

Cita Chicago (17th ed.)

Doyle, Robert E. Essential Skills and Strategies in the Helping Process. Pacific Grover, Calif: Brooks/Cole, 1992.

Cita MLA (9th ed.)

Doyle, Robert E. Essential Skills and Strategies in the Helping Process. Brooks/Cole, 1992.