APA (7th ed.) Citation

Loutrel, P. P. (1968). A solution to the hidden-line problem for computer-drawn polyhedra.

Chicago Style (17th ed.) Citation

Loutrel, P. P. A Solution to the Hidden-line Problem for Computer-drawn Polyhedra. 1968.

MLA (9th ed.) Citation

Loutrel, P. P. A Solution to the Hidden-line Problem for Computer-drawn Polyhedra. 1968.

Warning: These citations may not always be 100% accurate.