Sherris medical microbiology :an introduction to infectious diseases

 Ryan, Kenneth J.; Ray, C. George,; Sherris, John C.;

New York : : McGraw-Hill , 2004

Te Linde's operative gynecology

 Ryan, Kenneth J.; Rock, John A.; Thompson, John D.; Brieger, Gert; Dunn, Leo J.;

Philadelphia : Lippincott - Raven , 1992