Gaya APA
Wheelen, T, L., Hunger, J, D. (1987).
Strategic management (2nd ed.).
Reading Massachusetts:
Addson-Wesley.
Gaya MLA
Wheelen, Thomas, L., Hunger, J., David.
"Strategic management".
2nd ed.
Reading Massachusetts:
Addson-Wesley,
1987.
Buku/Printed Material.