Cita APA (7th ed.)

Frey, P. R. (1965). College chemistry (3d ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Frey, Paul R. College Chemistry. 3d ed. Englewood Cliffs, N. J.: Prentice-Hall, 1965.

Cita MLA (8th ed.)

Frey, Paul R. College Chemistry. 3d ed. Prentice-Hall, 1965.