National Council of Teachers of Mathematics. Simetría, congruencia y semenjanza.
Chicago Style (17th ed.) CitationNational Council of Teachers of Mathematics. Simetría, Congruencia Y Semenjanza.
MLA引文National Council of Teachers of Mathematics. Simetría, Congruencia Y Semenjanza.
警告：這些引文格式不一定是100％准確.