Παραπομπή σε μορφή APA (7η εκδ.)

Riddle, J. T. E., Stewart, E. M., & Alexander, M. F. (1989). The digestive system and the urinary system: 500 questions and answers for self-assessment. Churchill Livingstone.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Riddle, Janet T. E., Elizaneth M. Stewart, και Margaret F. Alexander. The Digestive System and the Urinary System: 500 Questions and Answers for Self-assessment. Edinburgh: Churchill Livingstone, 1989.

Παραπομπή σε μορφή MLA (8th εκδ.)

Riddle, Janet T. E., et al. The Digestive System and the Urinary System: 500 Questions and Answers for Self-assessment. Churchill Livingstone, 1989.