Gaya APA
Barber, B, E. (2004).
Strategi Kepemimpinan Bisnis Ala U.S Army's Elite Ranger : No Excuse Leadership .
Jakarta:
PT. Bhuana Ilmu Populer.
Gaya MLA
Barber, Brace, E.
"Strategi Kepemimpinan Bisnis Ala U.S Army's Elite Ranger : No Excuse Leadership".
Jakarta:
PT. Bhuana Ilmu Populer,
2004.
Text.