Cita APA (7th ed.)

Ziesak, A., & Barrett, R. (1999). Walter de Gruyter Publishers, 1749-1999. Walter de Gruyter.

Cita Chicago (17th ed.)

Ziesak, Anne-Katrin, i Rhodes Barrett. Walter De Gruyter Publishers, 1749-1999. Berlin ; New York: Walter de Gruyter, 1999.

Cita MLA (9th ed.)

Ziesak, Anne-Katrin, i Rhodes Barrett. Walter De Gruyter Publishers, 1749-1999. Walter de Gruyter, 1999.