Gaya APA

Zill, D, G. (1905). Differential Equations with Boundary-Value Problems . : CV. Spektra Anugerahabadi.

Gaya MLA

Zill, Dennis, G.. "Differential Equations with Boundary-Value Problems". : CV. Spektra Anugerahabadi, 1905. Tadris Ilmu Pengetahuan Alam.