Citazione Stile APA (7a Edizione)

Engelmann, S., Owen Engelmann, Engelmann, O., & Davis, K. L. S. (2002). Horizons: Learning to read (Level A, 3. [print].). SRA McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Engelmann, Siegfried, Owen Engelmann, Owen Engelmann, e Karen Lou Seitz Davis. Horizons: Learning to Read. Level A, 3. [print]. Columbus, Ohio: SRA McGraw-Hill, 2002.

Citatione MLA (9a ed.)

Engelmann, Siegfried, et al. Horizons: Learning to Read. Level A, 3. [print]. SRA McGraw-Hill, 2002.