Cita APA (7a ed.)

Moeller, J., Liedloff, H., & Kent, C. J. (1989). German today (4. ed.). Houghton Mifflin.

Cita Chicago Style (17a ed.)

Moeller, Jack, Helmut Liedloff, y Clifford J. Kent. German Today. 4. ed. Boston [u.a.]: Houghton Mifflin, 1989.

Cita MLA (9a ed.)

Moeller, Jack, et al. German Today. 4. ed. Houghton Mifflin, 1989.