APA

Dubelle S. T., . (1986). Effective teaching: critical skills. Lancaster, Pa., U.S.A: Technomic Pub.

Chicago

Dubelle Stanley T, . 1986. Effective teaching: critical skills. Lancaster, Pa., U.S.A: Technomic Pub.

Harvard

Dubelle S. T., . (1986). Effective teaching: critical skills. Lancaster, Pa., U.S.A: Technomic Pub.

MLA

Dubelle Stanley T, . Effective teaching: critical skills. Lancaster, Pa., U.S.A: Technomic Pub. 1986.