Gaya APA
Jr, M, W, M., Kaplan, R, E. (1992).
Whatever It Takes, The Realities of Managerial Decision Making (Kedua).
USA:
Prentice hall.
Gaya MLA
Jr, Morgan, W., McCall,., Kaplan, Robert, E..
"Whatever It Takes, The Realities of Managerial Decision Making".
Kedua
USA:
Prentice hall,
1992.
Teksbook.