Dyfyniad APA

Blum, R. H. (1969). Students and drugs: College and high school observations. Jossey-Bass.

Dyfyniad Arddull Chicago

Blum, Richard H. Students and Drugs: College and High School Observations. San Francisco: Jossey-Bass, 1969.

Dyfyniad MLA

Blum, Richard H. Students and Drugs: College and High School Observations. Jossey-Bass, 1969.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.