Gaya APA
AAPPLETON, J, D, [.
(1989).
LLOY'S ports of the world 1989
.
England:
Lloyds of London Press.
Gaya MLA
AAPPLETON, John, D., [ed].
"LLOY'S ports of the world 1989".
England:
Lloyds of London Press,
1989.
Buku.