APA

Shulman L., . (1979). The skills of helping: individuals and groups. Itasca, Ill: F. E. Peacock Publishers.

Chicago

Shulman Lawrence, . 1979. The skills of helping: individuals and groups. Itasca, Ill: F. E. Peacock Publishers.

Harvard

Shulman L., . (1979). The skills of helping: individuals and groups. Itasca, Ill: F. E. Peacock Publishers.

MLA

Shulman Lawrence, . The skills of helping: individuals and groups. Itasca, Ill: F. E. Peacock Publishers. 1979.