Gorrell, R. M., & Laird, C. G. 1. j. a. (1972). Modern English handbook (5th ed.). Prentice-Hall.
Cita Chicago (17th ed.)Gorrell, Robert M., i Charlton Grant 1901- joint auth Laird. Modern English Handbook. 5th ed. Englewood Cliffs, N. J: Prentice-Hall, 1972.
Cita MLA (9th ed.)Gorrell, Robert M., i Charlton Grant 1901- joint auth Laird. Modern English Handbook. 5th ed. Prentice-Hall, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.