Gaya APA

Weir, F, R, G, -, M, D. (1991). Differential Equations: A Modeling Approach . USA: Addison-Wesley Publising Company.

Gaya MLA

Weir, Frank, R., Giordano, -, Maurice, D.. "Differential Equations: A Modeling Approach". USA: Addison-Wesley Publising Company, 1991. Text.