Hartshorne, R. (1967). Foundations of projective geometry. Benjamin-Cummings.
Citazione stile Chigago Style (17a edizione)Hartshorne, Robin. Foundations of Projective Geometry. Reading: Benjamin-Cummings, 1967.
Citatione MLA (9a ed.)Hartshorne, Robin. Foundations of Projective Geometry. Benjamin-Cummings, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.