APA (7e ed.) Bronvermelding

Hjorth, N. (1961). Eczematous allergy to balsams: Allied perfumes and flavouring agents, with special reference to balsam of Peru. Munksgaard.

Chicago (17e ed.) Bronvermelding

Hjorth, Niels. Eczematous Allergy to Balsams: Allied Perfumes and Flavouring Agents, with Special Reference to Balsam of Peru. Copenhagen: Munksgaard, 1961.

MLA (8e ed.) Bronvermelding

Hjorth, Niels. Eczematous Allergy to Balsams: Allied Perfumes and Flavouring Agents, with Special Reference to Balsam of Peru. Munksgaard, 1961.