APA

Zill D. G., Cullen M. R., . (2003). Differential Equations with Boundary - Value Problems. Beijing: China Machine Press.

Chicago

Zill D G, Cullen M R, . 2003. Differential Equations with Boundary - Value Problems. Beijing: China Machine Press.

Harvard

Zill D. G., Cullen M. R., . (2003). Differential Equations with Boundary - Value Problems. Beijing: China Machine Press.

MLA

Zill D G, Cullen M R, . Differential Equations with Boundary - Value Problems. Beijing: China Machine Press. 2003.