Price, S., Foreword by Price, S., & Price, L. (1999). Aromatherapy for health professionals (2nd ed.). Churchill Livingstone.
Citazione stile Chigago Style (17a edizione)Price, Shirley, Shirley Foreword by Price, e Len Price. Aromatherapy for Health Professionals. 2nd ed. Edinburgh: Churchill Livingstone, 1999.
Citatione MLA (9a ed.)Price, Shirley, et al. Aromatherapy for Health Professionals. 2nd ed. Churchill Livingstone, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.