Citazione Stile APA (7a Edizione)

Stillman, D. M., Godor, D. D., & Gordon, R. L. (2015). German vocabulary drills. McGraw-Hill Education.

Citazione stile Chigago Style (17a edizione)

Stillman, David M., Daniele D. Godor, e Ronni L. Gordon. German Vocabulary Drills. New York: McGraw-Hill Education, 2015.

Citatione MLA (9a ed.)

Stillman, David M., et al. German Vocabulary Drills. McGraw-Hill Education, 2015.