Cita APA (7th ed.)

Lefcowitz, A. B. (1976). The writing skills workbook. Prentice-Hall.

Cita Chicago (17th ed.)

Lefcowitz, Allan B. The Writing Skills Workbook. Englewood Cliffs, N.J: Prentice-Hall, 1976.

Cita MLA (9th ed.)

Lefcowitz, Allan B. The Writing Skills Workbook. Prentice-Hall, 1976.