Citazione Stile APA (7a Edizione)
Guenther, E. The Essential oils: Individual essential oils of the plant families grramineae, lauraceae, burseraceae, myrtaceae, umbelliferae and geraniaceae. D. van Nostrand.
Citazione stile Chigago Style (17a edizione)
Guenther, Ernest. The Essential Oils: Individual Essential Oils of the Plant Families Grramineae, Lauraceae, Burseraceae, Myrtaceae, Umbelliferae and Geraniaceae. Nueva York, EUA: D. van Nostrand.
Citatione MLA (9a ed.)
Guenther, Ernest. The Essential Oils: Individual Essential Oils of the Plant Families Grramineae, Lauraceae, Burseraceae, Myrtaceae, Umbelliferae and Geraniaceae. D. van Nostrand.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.