Cita APA (7a ed.)

Immel, C., & Sacks, F. (1995). Better grammar in 30 minutes a day (Trade ed.). Career Press.

Cita Chicago Style (17a ed.)

Immel, Constance, y Florence Sacks. Better Grammar in 30 Minutes a Day. Trade ed. Franklin Lakes, New Jersey: Career Press, 1995.

Cita MLA (9a ed.)

Immel, Constance, y Florence Sacks. Better Grammar in 30 Minutes a Day. Trade ed. Career Press, 1995.