APA (7th ed.) Citation

Princeton Language Institute & Hollander, J. (1993). 21st century grammar handbook. Dell Pub.

Chicago Style (17th ed.) Citation

Princeton Language Institute and Joseph Hollander. 21st Century Grammar Handbook. New York: Dell Pub, 1993.

MLA (9th ed.) Citation

Princeton Language Institute and Joseph Hollander. 21st Century Grammar Handbook. Dell Pub, 1993.

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