APA (7th ed.) Citation

Rich Penny & Penny Rich. (2002). Practical Aromatherapy.

Chicago Style (17th ed.) Citation

Rich Penny and Penny Rich. Practical Aromatherapy. UK, 2002.

MLA (9th ed.) Citation

Rich Penny and Penny Rich. Practical Aromatherapy. 2002.

Warning: These citations may not always be 100% accurate.