Cita APA (7th ed.)

Knipping, J. B., & Becht, H. J. W. Jan Toorop. H.J.W. Becht.

Cita Chicago (17th ed.)

Knipping, John Baptist, i Herman J. W. Becht. Jan Toorop. Amsterdam: H.J.W. Becht.

Cita MLA (8th ed.)

Knipping, John Baptist, i Herman J. W. Becht. Jan Toorop. H.J.W. Becht.