APA

Feldman S. e., Elliott G. R. e., . (1990). At the threshold: The developing adolescent. USA: Harvard University Press.

Chicago

Feldman Shirley editora, Elliott Glen R editor, . 1990. At the threshold: The developing adolescent. USA: Harvard University Press.

Harvard

Feldman S. e., Elliott G. R. e., . (1990). At the threshold: The developing adolescent. USA: Harvard University Press.

MLA

Feldman Shirley editora, Elliott Glen R editor, . At the threshold: The developing adolescent. USA: Harvard University Press. 1990.