Citazione Stile APA (7a Edizione)

Farrell, A., & Noble, A. (1993). Einfach Klasse! (Rev. and updated, 1. publ., reprint. (with amendments).). Oxford Univ. Press.

Citazione stile Chigago Style (17a edizione)

Farrell, Anne, e Alison Noble. Einfach Klasse! Rev. and updated, 1. publ., reprint. (with amendments). Oxford [u.a.]: Oxford Univ. Press, 1993.

Citatione MLA (9a ed.)

Farrell, Anne, e Alison Noble. Einfach Klasse! Rev. and updated, 1. publ., reprint. (with amendments). Oxford Univ. Press, 1993.