Hjorth, N. (1979). Venereology in practice: The sexually committed diseases. Year Book Medical.
Citazione stile Chigago Style (17a edizione)Hjorth, Neils. Venereology in Practice: The Sexually Committed Diseases. Year Book Medical, 1979.
Citatione MLA (9a ed.)Hjorth, Neils. Venereology in Practice: The Sexually Committed Diseases. Year Book Medical, 1979.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.