Cita APA (7th ed.)

Gilhooly, K. J. (1988). Thinking: Directed, undirected and creative (2nd ed.). Academic Press.

Cita Chicago (17th ed.)

Gilhooly, K. J. Thinking: Directed, Undirected and Creative. 2nd ed. London: Academic Press, 1988.

Cita MLA (9th ed.)

Gilhooly, K. J. Thinking: Directed, Undirected and Creative. 2nd ed. Academic Press, 1988.