Gaya APA
Ludlow, R., Panton, F. (1991).
The Essence of Successful Staff Selection (Cet. Pertama).
United Kingdom:
Prentice Hall International.
Gaya MLA
Ludlow, Ron., Panton, Fergus.
"The Essence of Successful Staff Selection".
Cet. Pertama
United Kingdom:
Prentice Hall International,
1991.
BUKU.