Gaya APA
MAXWELL, J, C.
(2017).
THE 21 IRREFUTABLE LAWS OF LEADERSHIP
.
Surabaya:
PT Menuju Insan Cemerlang.
Gaya MLA
MAXWELL, JOHN, C..
"THE 21 IRREFUTABLE LAWS OF LEADERSHIP".
Surabaya:
PT Menuju Insan Cemerlang,
2017.
Text.