Cita APA (7th ed.)

Marzano, R. J., & Heflebower, T. (2012). Teaching and assessing 21st century skills (1a. ed.). Marzano Research Laboratory.

Cita Chicago (17th ed.)

Marzano, Robert J., i Tammy Heflebower. Teaching and Assessing 21st Century Skills. 1a. ed. Bloomington: Marzano Research Laboratory, 2012.

Cita MLA (9th ed.)

Marzano, Robert J., i Tammy Heflebower. Teaching and Assessing 21st Century Skills. 1a. ed. Marzano Research Laboratory, 2012.