APA (7e ed.) Bronvermelding

Hess, A. L. (1977). Four-dimensional geometry: An introduction. National Council of Teachers of Mathematics.

Chicago (17e ed.) Bronvermelding

Hess, Adrien L. Four-dimensional Geometry: An Introduction. Reston, VA: National Council of Teachers of Mathematics, 1977.

MLA (9e ed.) Bronvermelding

Hess, Adrien L. Four-dimensional Geometry: An Introduction. National Council of Teachers of Mathematics, 1977.