APA citiranje

Williams, J. F. (1980). Diagnosis of gastrointestinal parasitism in dogs and cats. [Saint Louis, Mo.]: [Ralston Purina Co.].

Trích dẫn kiểu Chicago

Williams, J. F. Diagnosis of Gastrointestinal Parasitism in Dogs and Cats. [Saint Louis, Mo.]: [Ralston Purina Co.], 1980.

MLA citiranje

Williams, J. F. Diagnosis of Gastrointestinal Parasitism in Dogs and Cats. [Saint Louis, Mo.]: [Ralston Purina Co.], 1980.