Cita APA (7th ed.)

O'MALLEY, R. F. (1968). Problems in chemistry. McGraw-Hill.

Cita Chicago (17th ed.)

O'MALLEY, Robert F. Problems in Chemistry. New York: McGraw-Hill, 1968.

Cita MLA (9th ed.)

O'MALLEY, Robert F. Problems in Chemistry. McGraw-Hill, 1968.