APA (7e ed.) Bronvermelding

TEACHING ELEMENTARY SCHOOL... & MARKS, J. L. (1975). Teaching elementary school mathematics for understanding.-- ed.4. McGraw-hill.

Chicago (17e ed.) Bronvermelding

TEACHING ELEMENTARY SCHOOL... en John L. MARKS. Teaching Elementary School Mathematics for Understanding.-- Ed.4. New York: McGraw-hill, 1975.

MLA (9e ed.) Bronvermelding

TEACHING ELEMENTARY SCHOOL... en John L. MARKS. Teaching Elementary School Mathematics for Understanding.-- Ed.4. McGraw-hill, 1975.