Cita APA (7th ed.)

Butler, C. H., Wren, F. L., & Banks, J. H. (1970). The teaching of secondary mathematics (5th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Butler, Charles H., Frank Lynwood Wren, i J. Houston Banks. The Teaching of Secondary Mathematics. 5th ed. New York: McGraw-Hill, 1970.

Cita MLA (9th ed.)

Butler, Charles H., et al. The Teaching of Secondary Mathematics. 5th ed. McGraw-Hill, 1970.