Gaya APA

Laurence, N. (2014). Basic of Social Research : Qualitative & Quantitative Approaches W. Lawrence Newman 3rd edition . Inggris: Pearson Education.

Gaya MLA

Laurence, NEUMAN,W. "Basic of Social Research : Qualitative & Quantitative Approaches W. Lawrence Newman 3rd edition". Inggris: Pearson Education, 2014. Text.