Administrative professional : theories and procedures 
Stulz, Karin. 
 - 7th ed. 
 -  Cengage Learning Asia Pte Ltd,  2016 
 - xiv, 460 p. 
978-9-81463395-6
Administrative assistants.
651.3 S9343 2016
                        978-9-81463395-6
Administrative assistants.
651.3 S9343 2016