Cita APA (7th ed.)
Clark, J. M., & Riddell, R. K. E. I. (1969). Collins contemporary german dictionary: German-english, Englisch-Deutsch (1 ed.). HarperCollins Publishers.
Cita Chicago (17th ed.)
Clark, James Midgley, i Rotraud Katharina Elisabeth Ingelborg Riddell. Collins Contemporary German Dictionary: German-english, Englisch-Deutsch. 1 ed. Glasgow: HarperCollins Publishers, 1969.
Cita MLA (9th ed.)
Clark, James Midgley, i Rotraud Katharina Elisabeth Ingelborg Riddell. Collins Contemporary German Dictionary: German-english, Englisch-Deutsch. 1 ed. HarperCollins Publishers, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.