APA (7th ed.) Citation

Trewby, M. (1989). A Gourmet's guide to herbs & spices. HPBooks.

Chicago Style (17th ed.) Citation

Trewby, Mary. A Gourmet's Guide to Herbs & Spices. Los Angeles: HPBooks, 1989.

MLA (9th ed.) Citation

Trewby, Mary. A Gourmet's Guide to Herbs & Spices. HPBooks, 1989.

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