Citazione Stile APA (7a Edizione)

Collett, D., & Spencer, M. (1998). German for starters (Study book, 1. publ.). Cambridge Univ. Press.

Citazione stile Chigago Style (17a edizione)

Collett, Diane, e Michael Spencer. German for Starters. Study book, 1. publ. Cambridge [u.a.]: Cambridge Univ. Press, 1998.

Citatione MLA (9a ed.)

Collett, Diane, e Michael Spencer. German for Starters. Study book, 1. publ. Cambridge Univ. Press, 1998.