Gaya APA
Mager, R, F., Pipe, P. (1994).
Analyzing performance problems: or you really oughta wanna (2nd.ed).
California:
Lake Publishing Company.
Gaya MLA
Mager, Robert, F.., Pipe, Peter.
"Analyzing performance problems: or you really oughta wanna".
2nd.ed
California:
Lake Publishing Company,
1994.
Buku/Printed Material.