APA (7e ed.) Bronvermelding

Loomis, E. S. (1968). The pythagorean proposition: Its demonstration analyzed and classified and bibliography of sources of the four kinds of "Proofs". National Council of Teachers of Mathematics.

Chicago (17e ed.) Bronvermelding

Loomis, Elisha Scott. The Pythagorean Proposition: Its Demonstration Analyzed and Classified and Bibliography of Sources of the Four Kinds of "Proofs". Washington, D.C: National Council of Teachers of Mathematics, 1968.

MLA (9e ed.) Bronvermelding

Loomis, Elisha Scott. The Pythagorean Proposition: Its Demonstration Analyzed and Classified and Bibliography of Sources of the Four Kinds of "Proofs". National Council of Teachers of Mathematics, 1968.