Gaya APA
Covey., S, M., Merrill, 2, R, R. (2008).
The SPEED of TRUST: The one Thing That Changes Everything .
Newyork:
Free Press.
Gaya MLA
Covey., Stephen, M.R.., Merrill, 2., Rebecca, R..
"The SPEED of TRUST: The one Thing That Changes Everything".
Newyork:
Free Press,
2008.
Book.