Gaya APA
Modern business correspondence. ().
Malang:
Lidar group.
Gaya Chicago
Modern business correspondence.
.
Malang:
Lidar group,
.
Text.
Gaya MLA
Modern business correspondence.
.
Malang:
Lidar group,
.
Text.
Gaya Turabian
Modern business correspondence.
Malang:
Lidar group,
.
Print.