Gaya APA

DiPrima, W, E, B, ;, R, C. (1986). Elementary differential equations and boundary value problems (ed. 4). USA: John Wiley.

Gaya MLA

DiPrima, William, E., Boyce, ;, Richard, C.. "Elementary differential equations and boundary value problems". ed. 4 USA: John Wiley, 1986. Text.