MLA

Russell, John J, and Edward F Ryan Jr.. Common Dermatologic Conditions In Primary Care. Springer International Publishing, 2019.

APA

Russell, J. J, & Ryan Jr., E. F. (2019). Common Dermatologic Conditions in Primary Care. Springer International Publishing.

Chicago

Russell, John J., and Edward F Ryan Jr.. Common Dermatologic Conditions In Primary Care. : Springer International Publishing, 2019.