Gaya APA

Gartside, L. (1989). Modern business correspondence. A comprehensive guide to business writing and related office service. (1989). : Jakarta : Binarupa Aksara,.

Gaya MLA

Gartside, L.. "Modern business correspondence. A comprehensive guide to business writing and related office service.". 1989 : Jakarta : Binarupa Aksara,, 1989. Text.