Cita APA (7a ed.)

Koot, T., Rotgans, F. J., & Moonen-Dufourcq, M. C. (1967). Amsterdam. Knorr & Hirth.

Cita Chicago Style (17a ed.)

Koot, Tom, Frits J. Rotgans, y M. Claire Moonen-Dufourcq. Amsterdam. Munich ; Ahrbeck/Hannover: Knorr & Hirth, 1967.

Cita MLA (9a ed.)

Koot, Tom, et al. Amsterdam. Knorr & Hirth, 1967.