APA

Nelson R. W., Couto C. G., . (2020). Small animal internal medicine. St. Louis: Elsevier.

Chicago

Nelson Richard W, Couto C Guillermo, . 2020. Small animal internal medicine. St. Louis: Elsevier.

Harvard

Nelson R. W., Couto C. G., . (2020). Small animal internal medicine. St. Louis: Elsevier.

MLA

Nelson Richard W, Couto C Guillermo, . Small animal internal medicine. St. Louis: Elsevier. 2020.