Gaya APA
Gomulya, B. (2012).
Problem Solving And Decision Making For Improvement .
Jakarta:
Pt Gramedia Pustaka Utama.
Gaya MLA
Gomulya, Berny.
"Problem Solving And Decision Making For Improvement".
Jakarta:
Pt Gramedia Pustaka Utama,
2012.
Buku Teks.