Spirt, B. A., Gordon, L. P., & Oliphant, M. (1987). Prenatal ultrasound: A color atlas with anatomic and pathologic correlation. Churchill Livingstone.
Citazione stile Chigago Style (17a edizione)Spirt, Beverly A., Lawrence P. Gordon, e Michael Oliphant. Prenatal Ultrasound: A Color Atlas with Anatomic and Pathologic Correlation. New York: Churchill Livingstone, 1987.
Citatione MLA (9a ed.)Spirt, Beverly A., et al. Prenatal Ultrasound: A Color Atlas with Anatomic and Pathologic Correlation. Churchill Livingstone, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.