Παραπομπή APA

Butzer, P. L., & Feher, F. (1981). E.B. Christoffel: The influence of his work on mathematics and the physical sciences. Basel: Birkhauser Verlag.

Παραπομπή Chicago Style

Butzer, Paul Leo, and F. Feher. E.B. Christoffel: The Influence of His Work On Mathematics and the Physical Sciences. Basel: Birkhauser Verlag, 1981.

Παραπομπή MLA

Butzer, Paul Leo, and F. Feher. E.B. Christoffel: The Influence of His Work On Mathematics and the Physical Sciences. Basel: Birkhauser Verlag, 1981.

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