Cita APA (7a ed.)

Engelmann, S., & Silbert, J. (2008). Expressive writing 1: A direct instruction program. Workbook. SRA.

Cita Chicago Style (17a ed.)

Engelmann, Siegfried, y Jerry Silbert. Expressive Writing 1: A Direct Instruction Program. Workbook. Columbus, OH: SRA, 2008.

Cita MLA (9a ed.)

Engelmann, Siegfried, y Jerry Silbert. Expressive Writing 1: A Direct Instruction Program. Workbook. SRA, 2008.