Swanson, C. P., & Webster, P. L. (1977). The cell (4th ed.). Prentice-Hall.
Cita Chicago (17th ed.)Swanson, Carl P., i Peter L. Webster. The Cell. 4th ed. Englewood Cliffs, N. J: Prentice-Hall, 1977.
Cita MLA (9th ed.)Swanson, Carl P., i Peter L. Webster. The Cell. 4th ed. Prentice-Hall, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.