APA (7e ed.) Bronvermelding

Não informado. (1969). Utrecht micropaleontological bulletins. State University of Utrecht, Department of Stratigraphy and Paleontology.

Chicago (17e ed.) Bronvermelding

Não informado. Utrecht Micropaleontological Bulletins. Utrecht, Holanda: State University of Utrecht, Department of Stratigraphy and Paleontology, 1969.

MLA (8e ed.) Bronvermelding

Não informado. Utrecht Micropaleontological Bulletins. State University of Utrecht, Department of Stratigraphy and Paleontology, 1969.

Let op: Deze citaties zijn niet altijd 100% accuraat.