Παραπομπή APA

Brumfiel, G. W. (1979). Partially ordered rings and semi-algebraic geometry.

Παραπομπή Chicago Style

Brumfiel, Gregory W. Partially Ordered Rings and Semi-algebraic Geometry. Cambridge University Press, Cambridge, 1979.

Παραπομπή MLA

Brumfiel, Gregory W. Partially Ordered Rings and Semi-algebraic Geometry. 1979.