Olsen, S. A. (1982). Group planning and problem-solving methods in engineering management. New York : John Wiley.
Chicago-viite (17. p.)Olsen, Shirley A. Group Planning and Problem-solving Methods in Engineering Management. New York : John Wiley, 1982.
MLA-viite (9. p.)Olsen, Shirley A. Group Planning and Problem-solving Methods in Engineering Management. New York : John Wiley, 1982.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.