APA (7e ed.) Bronvermelding

Twining, P., McHugo, J. M., & Pilling, D. W. (2000). Textbook of fetal abnormalities. Churchill Livingstone.

Chicago (17e ed.) Bronvermelding

Twining, Peter, Josephine M. McHugo, en David W. Pilling. Textbook of Fetal Abnormalities. London: Churchill Livingstone, 2000.

MLA (9e ed.) Bronvermelding

Twining, Peter, et al. Textbook of Fetal Abnormalities. Churchill Livingstone, 2000.