APA Format
Joseph Harvard;
. (2001). Guide to professional & businedd correspondence (Inggris-Indonesia)
/
. Jakarta : PPM
MLA Format
Joseph Harvard;
. Guide to professional & businedd correspondence (Inggris-Indonesia)
/
. Jakarta : PPM, 2001
Chicago Format
Joseph Harvard;
. Guide to professional & businedd correspondence (Inggris-Indonesia)
/
. Jakarta : PPM, 2001
Australian/Harvard Format
Joseph Harvard;
. 2001. Guide to professional & businedd correspondence (Inggris-Indonesia)
/
. PPM Jakarta