APA citiranje

Berry, G. A. (1920). A DIFFICULTY IN ACCEPTING THE YOUNG-HELMHOLTZ THEORY.

Citação norma Chicago

Berry, George Andreas. A DIFFICULTY IN ACCEPTING THE YOUNG-HELMHOLTZ THEORY. 1920.

MLA citiranje

Berry, George Andreas. A DIFFICULTY IN ACCEPTING THE YOUNG-HELMHOLTZ THEORY. 1920.

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