1. Dermatology in general medicine;Fitzpatrick,1979
2. Skin disorders in pregnancy;McKenzie;Practioner (London),1971
3. Dermatoses associated with pregnancy;Cummings;Cutis,1967
4. Melasma: A clinical, light microscopic, ultrastructural, and immunofluorescent study;Sanchez;J Am Acad Dermatol,1981