Cita APA (7th ed.)

FREY, P. R. (1969). Chemistry problems: And how to solve them. Barnes & Noble.

Cita Chicago (17th ed.)

FREY, Paul R. Chemistry Problems: And How to Solve Them. New York: Barnes & Noble, 1969.

Cita MLA (9th ed.)

FREY, Paul R. Chemistry Problems: And How to Solve Them. Barnes & Noble, 1969.