Citazione Stile APA (7a Edizione)

Harvard, J. (1971). Conversational german: A course for adults (1. publ., 4. impr.). Univ. of London Press.

Citazione stile Chigago Style (17a edizione)

Harvard, Jospeh. Conversational German: A Course for Adults. 1. publ., 4. impr. London: Univ. of London Press, 1971.

Citatione MLA (9a ed.)

Harvard, Jospeh. Conversational German: A Course for Adults. 1. publ., 4. impr. Univ. of London Press, 1971.