APA

Krey I. A., Metzler B. V., . (1976). Principles and techniques of effective business communication: a text-workbook. New York: Harcourt Brace Jovanovich.

Chicago

Krey Isabelle A, Metzler Bernadette V, . 1976. Principles and techniques of effective business communication: a text-workbook. New York: Harcourt Brace Jovanovich.

Harvard

Krey I. A., Metzler B. V., . (1976). Principles and techniques of effective business communication: a text-workbook. New York: Harcourt Brace Jovanovich.

MLA

Krey Isabelle A, Metzler Bernadette V, . Principles and techniques of effective business communication: a text-workbook. New York: Harcourt Brace Jovanovich. 1976.