VanHuss, Susie H.
Basic letter and memo writing / Susie H. VanHuss
South-Western Education Publishing, 1998
 Buku Teks SO
Hutabarat, Roselyne
Practical bank letter writing : menulis surat perbankan praktis
Erlangga, 2009
 Buku Teks
Bowman, Joel P.
Effective business correspondence
Harper & Row Publishers, 1979
 Buku Referensi
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