APA

Pask G., . (1961). An approach to cybernetics. New York: Harper.

Chicago

Pask Gordon, . 1961. An approach to cybernetics. New York: Harper.

Harvard

Pask G., . (1961). An approach to cybernetics. New York: Harper.

MLA

Pask Gordon, . An approach to cybernetics. New York: Harper. 1961.