Gaya APA
Cammack, M, D., Hasymi, .
(1981).
Bidang Usaha Asuransi
.
Jakarta:
Balai Akasara.
Gaya MLA
Cammack, Mehr, Dan., Hasymi, .
"Bidang Usaha Asuransi".
Jakarta:
Balai Akasara,
1981.
Teks Book.