Young, T. L., & Castriota, L. B. (1996). Planning projects: 20 steps to effective project planning. International Association for the Study of Traditional Environments.
Chicago-viite (17. p.)Young, Trevor L., ja Leonardo Barci Castriota. Planning Projects: 20 Steps to Effective Project Planning. Berkeley, CA: International Association for the Study of Traditional Environments, 1996.
MLA-viite (8. p.)Young, Trevor L., ja Leonardo Barci Castriota. Planning Projects: 20 Steps to Effective Project Planning. International Association for the Study of Traditional Environments, 1996.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.