Lua APA (7ú heag.)
Zill, D. G., & Cullen, M. R. (1997). Differential equations with boundary-value problems (4th ed.). Brooks/Cole Pub. Co..
Lua i Stíl Chicago (17ú heag.)
Zill, Dennis G., agus Michael R. Cullen. Differential Equations with Boundary-value Problems. 4th ed. Pacific Grove: Brooks/Cole Pub. Co., 1997.
Lua MLA (9ú heag.)
Zill, Dennis G., agus Michael R. Cullen. Differential Equations with Boundary-value Problems. 4th ed. Brooks/Cole Pub. Co., 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.