APA (7e ed.) Bronvermelding

Toerien, M. J. (1971). The developmental morphology of the chondrocranium of Podiceps cristatus. University of Stellenbosch.

Chicago (17e ed.) Bronvermelding

Toerien, M. J. The Developmental Morphology of the Chondrocranium of Podiceps Cristatus. Stellenbosch: University of Stellenbosch, 1971.

MLA (8e ed.) Bronvermelding

Toerien, M. J. The Developmental Morphology of the Chondrocranium of Podiceps Cristatus. University of Stellenbosch, 1971.