Gaya APA

Kass, G, A., Geffner, S, L. (1969). Chemistry Regents Questions and Answers . New York: Amsco School Publications, Inc..

Gaya MLA

Kass, Gerard, A.., Geffner, Saul, L.. "Chemistry Regents Questions and Answers". New York: Amsco School Publications, Inc., 1969. Text.