APA ציטוט

National Council of Teachers of Mathematics, U.S.A. (1970). Geometría informal. Trillas.

Chicago Style (17th ed.) Citation

National Council of Teachers of Mathematics, U.S.A. Geometría Informal. Ciudad de México: Trillas, 1970.

ציטוט MLA

National Council of Teachers of Mathematics, U.S.A. Geometría Informal. Trillas, 1970.