Cita APA (7th ed.)

Hackenberg, A. J., Norton, A., & Wright, R. J. (2016). Developing fractions knowledge. SAGE.

Cita Chicago (17th ed.)

Hackenberg, Amy J., Anderson Norton, i Robert J. Wright. Developing Fractions Knowledge. Los Angeles: SAGE, 2016.

Cita MLA (9th ed.)

Hackenberg, Amy J., et al. Developing Fractions Knowledge. SAGE, 2016.