VanHuss, Susie H.
Basic letter and memo writing / Susie H. VanHuss
South-Western Education Publishing, 1998
Buku Teks
Hutabarat, Roselyne
Practical bank letter writing : menulis surat perbankan praktis
Erlangga, 2009
Buku Teks
Keenan, John
Feel free to write : guide for business and professional people / John Keenan
John Wiley & Sons, 1982
Buku Teks
Bouwens, C.
English Commercial correspondence
Persatuan Tenaga, 1957
Buku Teks
King, F.W
English business letters : commercial correspondence for foreign students/F.W. King, D. Ann Cree.
Longmans , 1979
Buku Teks