APA

Campion R., . (1972). The invisible worm. New York: Macmillan Publishers.

Chicago

Campion Rosomond, . 1972. The invisible worm. New York: Macmillan Publishers.

Harvard

Campion R., . (1972). The invisible worm. New York: Macmillan Publishers.

MLA

Campion Rosomond, . The invisible worm. New York: Macmillan Publishers. 1972.