APA

Hall R. P., . (1953). Protozoology. New York: Prentice-Hall.

Chicago

Hall Richard P, . 1953. Protozoology. New York: Prentice-Hall.

Harvard

Hall R. P., . (1953). Protozoology. New York: Prentice-Hall.

MLA

Hall Richard P, . Protozoology. New York: Prentice-Hall. 1953.