Παραπομπή APA

Berg, P. W., McGregor, J. L., & McGregor, J. L. (1966). Elementary partial differential equations. San Francisco: Holden-Day.

Παραπομπή Chicago Style

Berg, Paul W., James L. McGregor, and James L. McGregor. Elementary Partial Differential Equations. San Francisco: Holden-Day, 1966.

Παραπομπή MLA

Berg, Paul W., James L. McGregor, and James L. McGregor. Elementary Partial Differential Equations. San Francisco: Holden-Day, 1966.

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