Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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