Cita APA (7a ed.)

Kagan, J. (1992). Unstable ideas: Temperament, cognition, and self (1st Harvard University Press pbk. ed.). Harvard University Press.

Cita Chicago Style (17a ed.)

Kagan, Jerome. Unstable Ideas: Temperament, Cognition, and Self. 1st Harvard University Press pbk. ed. Cambridge (Massachusetts) [etc.]: Harvard University Press, 1992.

Cita MLA (9a ed.)

Kagan, Jerome. Unstable Ideas: Temperament, Cognition, and Self. 1st Harvard University Press pbk. ed. Harvard University Press, 1992.