APA (7th ed.) Citation

(1990). At the threshold: The developing adolescent. Harvard Univ. Pr.

Chicago Style (17th ed.) Citation

At the Threshold: The Developing Adolescent. Cambridge, Mass. u.a: Harvard Univ. Pr, 1990.

MLA (9th ed.) Citation

At the Threshold: The Developing Adolescent. Harvard Univ. Pr, 1990.

Warning: These citations may not always be 100% accurate.