APA (7th ed.) Citation

Price, S., Foreword by Price, S., & Price, L. (1999). Aromatherapy for health professionals (2nd ed.). Churchill Livingstone.

Chicago Style (17th ed.) Citation

Price, Shirley, Shirley Foreword by Price, and Len Price. Aromatherapy for Health Professionals. 2nd ed. Edinburgh: Churchill Livingstone, 1999.

MLA (9th ed.) Citation

Price, Shirley, et al. Aromatherapy for Health Professionals. 2nd ed. Churchill Livingstone, 1999.