Gaya APA
Lawrence, N, ,, W. (2014).
Basies Of Social Research : Qualitatif & Quantitatif Approaches .
edinburg:
Pearson education limited.
Gaya MLA
Lawrence, Neuman, ,, W.
"Basies Of Social Research : Qualitatif & Quantitatif Approaches".
edinburg:
Pearson education limited,
2014.
Text.