APA aipamena

Pugh, D. (1921). A problem course in chemistry Q. Allyn & Bacon.

Chicago Style aipamena

Pugh, D.B. A Problem Course in Chemistry Q. Boston: Allyn & Bacon, 1921.

MLA aipamena

Pugh, D.B. A Problem Course in Chemistry Q. Allyn & Bacon, 1921.