Mitchell, B. E., & Cohen, H. 1. . . j. a. (1965). A new look at elementary. Prentice-Hall.
Cita Chicago (17th ed.)Mitchell, Benjamin E., i Haskell 1920- joint author Cohen. A New Look at Elementary. Englewood Cliffs, N. J: Prentice-Hall, 1965.
Cita MLA (9th ed.)Mitchell, Benjamin E., i Haskell 1920- joint author Cohen. A New Look at Elementary. Prentice-Hall, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.