Cita APA (7th ed.)

DWYER, R. C., & ELLIGETT, J. K. (1970). Natural mathematics: Teaching children through. Parker Pub.

Cita Chicago (17th ed.)

DWYER, Robert C., i Jane K. ELLIGETT. Natural Mathematics: Teaching Children Through. New York: Parker Pub, 1970.

Cita MLA (9th ed.)

DWYER, Robert C., i Jane K. ELLIGETT. Natural Mathematics: Teaching Children Through. Parker Pub, 1970.