APA (7th ed.) Citation

Knepler, M. (1990). Grammar with a purpose. Heinle & Heinle.

Chicago Style (17th ed.) Citation

Knepler, Myrna. Grammar with a Purpose. Boston, Mass: Heinle & Heinle, 1990.

MLA (9th ed.) Citation

Knepler, Myrna. Grammar with a Purpose. Heinle & Heinle, 1990.

Warning: These citations may not always be 100% accurate.