APA Style
Lubis, S. (2009).
Step by step in Developing: Vision, Mission & Value Statements .
Jakarta:
Gramedia Pustaka Utama.
MLA Style
Lubis, Suwardi.
"Step by step in Developing: Vision, Mission & Value Statements".
Jakarta:
Gramedia Pustaka Utama,
2009.
Perpustakaan KALBIS.