Citazione Stile APA (7a Edizione)

Huizenga, J., & Thomas-Ruzic, M. (1990). Writing workout. A program for new students of english. Heinle and Heinle.

Citazione stile Chigago Style (17a edizione)

Huizenga, Jann, e María Thomas-Ruzic. Writing Workout. A Program for New Students of English. Boston: Heinle and Heinle, 1990.

Citatione MLA (9a ed.)

Huizenga, Jann, e María Thomas-Ruzic. Writing Workout. A Program for New Students of English. Heinle and Heinle, 1990.