Cita APA (7a ed.)

Marzano, R. J., & Marzano, J. S. (1988). A cluster approach to elementary vocabulary instruction. IRA.

Cita Chicago Style (17a ed.)

Marzano, Robert J., y Jana S. Marzano. A Cluster Approach to Elementary Vocabulary Instruction. Newark: IRA, 1988.

Cita MLA (9a ed.)

Marzano, Robert J., y Jana S. Marzano. A Cluster Approach to Elementary Vocabulary Instruction. IRA, 1988.