Zill, D. G., & Ross, S. L. (1986). Differential Equations: With boundary-value problems (3rd ed.). PWS-Kent Pub. Co..
Citazione stile Chigago Style (17a edizione)Zill, Dennis G., e Shepley L. Ross. Differential Equations: With Boundary-value Problems. 3rd ed. Boston: PWS-Kent Pub. Co., 1986.
Citatione MLA (9a ed.)Zill, Dennis G., e Shepley L. Ross. Differential Equations: With Boundary-value Problems. 3rd ed. PWS-Kent Pub. Co., 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.