APA (7th ed.) Citation

Guilford, J. P. (1968). Intelligence, creativity, and their educational implications. R. R. Knapp.

Chicago Style (17th ed.) Citation

Guilford, Joy Paul. Intelligence, Creativity, and Their Educational Implications. San Diego, Calif: R. R. Knapp, 1968.

MLA (9th ed.) Citation

Guilford, Joy Paul. Intelligence, Creativity, and Their Educational Implications. R. R. Knapp, 1968.