Citazione Stile APA (7a Edizione)

Ripman, W. (1930). A new German grammar with exercises (1. publ.). Dent.

Citazione stile Chigago Style (17a edizione)

Ripman, Walter. A New German Grammar with Exercises. 1. publ. London [u.a.]: Dent, 1930.

Citatione MLA (9a ed.)

Ripman, Walter. A New German Grammar with Exercises. 1. publ. Dent, 1930.