McKellips, R. L. (1977). The role of the language and operations of sets in the elementary arithmetic program. University of the Philippines Library.
Chicago (17e ed.) BronvermeldingMcKellips, Raymond Leon. The Role of the Language and Operations of Sets in the Elementary Arithmetic Program. Quezon City: University of the Philippines Library, 1977.
MLA (9e ed.) BronvermeldingMcKellips, Raymond Leon. The Role of the Language and Operations of Sets in the Elementary Arithmetic Program. University of the Philippines Library, 1977.
Let op: Deze citaties zijn niet altijd 100% accuraat.