Gaya APA

C.Diprima, W, E, B, &, R. (1997). Elementary Differential Equations and Boundary Value Problems. (--). New York: John Wiley & Sons, Inc.

Gaya MLA

C.Diprima, William, E., Boyce, &, Richard. "Elementary Differential Equations and Boundary Value Problems.". -- New York: John Wiley & Sons, Inc, 1997. Text.