Cita APA (7a ed.)

Dalen, D. v. (1963). Extension problems in intuitionistic plane projective geometry. Drukkerij Holland.

Cita Chicago Style (17a ed.)

Dalen, D. van. Extension Problems in Intuitionistic Plane Projective Geometry. Amsterdam: Drukkerij Holland, 1963.

Cita MLA (8a ed.)

Dalen, D. van. Extension Problems in Intuitionistic Plane Projective Geometry. Drukkerij Holland, 1963.