Mason, Jennifer
Qualitative researching
Sage, 2009
Buku Teks SO
Carr, Chris J.
Law of evidence
Blacstone Press , 1989
Buku Teks
Gobbo, J.A.
Cross on Evidence
Butterworth, 1970
Buku Teks
McKibben, Bill
The end of nature
Random House, 1989
Buku Teks
Postlethwait, John H.
The nature of life
McGraw-Hill Publishing Company, 1989
Buku Referensi