Gregorio, B. L. (2009). Peace and development education: An introduction to the core concepts in peace and development education for college students. C & E Pub.
Čikaški stil citiranja (17. izdanje)Gregorio, Bienvenido L. Peace and Development Education: An Introduction to the Core Concepts in Peace and Development Education for College Students. Quezon City: C & E Pub, 2009.
MLA način citiranja (9. izdanje)Gregorio, Bienvenido L. Peace and Development Education: An Introduction to the Core Concepts in Peace and Development Education for College Students. C & E Pub, 2009.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.