APA (7th ed.) Citation

Berg, P. W., & McGregor, J. L. (1964). Elementary partial differential equations (1964) (Preliminary ed.). Holden-Day.

Chicago Style (17th ed.) Citation

Berg, Paul W., and James L. McGregor. Elementary Partial Differential Equations (1964). Preliminary ed. San Francisco: Holden-Day, 1964.

MLA (9th ed.) Citation

Berg, Paul W., and James L. McGregor. Elementary Partial Differential Equations (1964). Preliminary ed. Holden-Day, 1964.