Gaya APA
Heni, Yusri. (2011).
Improving Our Safety Culture .
Jakarta:
PT. Gramedia Pustaka Utama.
Gaya Chicago
Heni, Yusri.
Improving Our Safety Culture.
Jakarta:
PT. Gramedia Pustaka Utama,
2011.
Text Book.
Gaya MLA
Heni, Yusri.
Improving Our Safety Culture.
Jakarta:
PT. Gramedia Pustaka Utama,
2011.
Text Book.
Gaya Turabian
Heni, Yusri.
Improving Our Safety Culture.
Jakarta:
PT. Gramedia Pustaka Utama,
2011.
Text Book.