Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Weerd, M. d. The date of Valkenburg 1 reconsidered. The reduction of a multiple choice question.

Chicago Citation Edition Citation

Weerd, M.D. de. The Date of Valkenburg 1 Reconsidered. The Reduction of a Multiple Choice Question.

MLA Citation Edition Citation

Weerd, M.D. de. The Date of Valkenburg 1 Reconsidered. The Reduction of a Multiple Choice Question.