APA

Olsen E. A., Katz H. I., Levine N., Nigra T. P., Pochi P. E., Savin R. C., Shupack J., Weinstein G. D., Lufrano L. & Perry B. H. (19970909). Tretinoin emollient cream for photodamaged skin: results of 48-week, multicenter, double-blind studies. : Journal of the American Academy of Dermatology.

Chicago

Olsen E A, Katz H I, Levine N, Nigra T P, Pochi P E, Savin R C, Shupack J, Weinstein G D, Lufrano L and Perry B H. 19970909. Tretinoin emollient cream for photodamaged skin: results of 48-week, multicenter, double-blind studies. : Journal of the American Academy of Dermatology.

Harvard

Olsen E. A., Katz H. I., Levine N., Nigra T. P., Pochi P. E., Savin R. C., Shupack J., Weinstein G. D., Lufrano L. and Perry B. H. (19970909). Tretinoin emollient cream for photodamaged skin: results of 48-week, multicenter, double-blind studies. : Journal of the American Academy of Dermatology.

MLA

Olsen E A, Katz H I, Levine N, Nigra T P, Pochi P E, Savin R C, Shupack J, Weinstein G D, Lufrano L and Perry B H. Tretinoin emollient cream for photodamaged skin: results of 48-week, multicenter, double-blind studies. : Journal of the American Academy of Dermatology. 19970909.