Stroman, James
Administrative assistant's and secretary's handbook
[American Management Association;, ], 2012
 eBooks
The Professional secretary's Handbook
Boston: Houghton: 1993,
 Buku Referensi
Becker, Esther R.
The successful secretary's handbook
Harper &​ Row, 1971
 Buku Referensi
De Vries, Mary Ann
Complete secretary's handbook
Prentice-Hall, 1991
 Buku Referensi
Stroman, James
Administrative assistant's and secretary's handbook
American Management Association, 2008
 eBooks