APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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