Cita APA (7th ed.)

Speck, J. (1980). R - Z. Vandenhoeck & Ruprecht.

Cita Chicago (17th ed.)

Speck, Josef. R - Z. Göttingen: Vandenhoeck & Ruprecht, 1980.

Cita MLA (8th ed.)

Speck, Josef. R - Z. Vandenhoeck & Ruprecht, 1980.