APA

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

Chicago

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

Harvard

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

MLA

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