Cita APA (7th ed.)

Eckhard-Black, C., & Whittle, R. (1992). Cassell's contemporary German: A handbook of grammar current usage, and word power. Macmillan.

Cita Chicago (17th ed.)

Eckhard-Black, Christine, i Ruth Whittle. Cassell's Contemporary German: A Handbook of Grammar Current Usage, and Word Power. New York: Macmillan, 1992.

Cita MLA (9th ed.)

Eckhard-Black, Christine, i Ruth Whittle. Cassell's Contemporary German: A Handbook of Grammar Current Usage, and Word Power. Macmillan, 1992.