APA

Project Management Institute (Pennsylvania), . (2004). A guide to the project management body of knowledge. Newtown Square: Project Management Institute.

Chicago

Project Management Institute (Pennsylvania), . 2004. A guide to the project management body of knowledge. Newtown Square: Project Management Institute.

Harvard

Project Management Institute (Pennsylvania), . (2004). A guide to the project management body of knowledge. Newtown Square: Project Management Institute.

MLA

Project Management Institute (Pennsylvania), . A guide to the project management body of knowledge. Newtown Square: Project Management Institute. 2004.