Cita APA (7th ed.)

Dubnoff, B., Chambers, I., & Shaefer, F. (1968). Pre-writing perceptual motor exercises. Student workbook. Teaching Resources.

Cita Chicago (17th ed.)

Dubnoff, Belle, Irene Chambers, i Florence Shaefer. Pre-writing Perceptual Motor Exercises. Student Workbook. Nueva York: Teaching Resources, 1968.

Cita MLA (9th ed.)

Dubnoff, Belle, et al. Pre-writing Perceptual Motor Exercises. Student Workbook. Teaching Resources, 1968.