Citazione Stile APA (7a Edizione)

Lange, E. C., & La Cortina, R. D. d. (1973). Cortina's German in 20 lessons with illustrations: Intended for self-study and for use in schools (6th ed.). R.D. Cortina.

Citazione stile Chigago Style (17a edizione)

Lange, Eva C., e Rafael Diez de La Cortina. Cortina's German in 20 Lessons with Illustrations: Intended for Self-study and for Use in Schools. 6th ed. New York: R.D. Cortina, 1973.

Citatione MLA (9a ed.)

Lange, Eva C., e Rafael Diez de La Cortina. Cortina's German in 20 Lessons with Illustrations: Intended for Self-study and for Use in Schools. 6th ed. R.D. Cortina, 1973.