Cita APA

Smith, C. B., & Wardhaugh, R. (1990). Scope and sequence, levels 1-18, kindergarten-primary grades. Riverside: Macmillan.

Citación estilo Chicago

Smith, Carl B., y Ronald Wardhaugh. Scope and Sequence, Levels 1-18, Kindergarten-primary Grades. Riverside: Macmillan, 1990.

Cita MLA

Smith, Carl B., y Ronald Wardhaugh. Scope and Sequence, Levels 1-18, Kindergarten-primary Grades. Riverside: Macmillan, 1990.