Gaya APA
Schouten,Jan, ., Lingsma,Joke, . (2009).
Personal Effectiveness : How To Speak Up, Open Up, And Stand Firm .
Netherlands:
Thema Publisher.
Gaya MLA
Schouten,Jan, ., Lingsma,Joke, .
"Personal Effectiveness : How To Speak Up, Open Up, And Stand Firm".
Netherlands:
Thema Publisher,
2009.
Textbook.