Cita APA (7th ed.)

Ziegenfuss, W., & Jung, G. (1950). L - Z. de Gruyter.

Cita Chicago (17th ed.)

Ziegenfuss, Werner, i Gertrud Jung. L - Z. Berlin: de Gruyter, 1950.

Cita MLA (8th ed.)

Ziegenfuss, Werner, i Gertrud Jung. L - Z. de Gruyter, 1950.