Citazione APA

Arnold, J. I., & Philippi, H. A. (1958). Challenges to American youth (6th ed.). Row, Peterson.

Stile di citazione Chicago

Arnold, Joseph Irvin, e Harlan A. Philippi. Challenges to American Youth. 6th ed. Evanston, Ill: Row, Peterson, 1958.

Citazione MLA

Arnold, Joseph Irvin, e Harlan A. Philippi. Challenges to American Youth. 6th ed. Row, Peterson, 1958.