APA-referens (7:e uppl.)

Powers, D. L. (1987). Boundary value problems (3rd ed.). Harcourt Brace Jovanovich.

Chicago-referens (17:e uppl.)

Powers, David L. Boundary Value Problems. 3rd ed. San Diego: Harcourt Brace Jovanovich, 1987.

MLA-referens (9:e uppl.)

Powers, David L. Boundary Value Problems. 3rd ed. Harcourt Brace Jovanovich, 1987.