Schwartz, Mortimer D.
Man and the environment information guide series: Environmental law: a guide to information sources
Gale Research, 1977
Buku Teks
Rosenne, Shabtai
Practice and methods of international law
Oceana Publications, 1984
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Clinch, Peter
Legal information : what it is and where to find it / Peter Clinch
Aslib, 2000
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Berring, Robert C.
Finding the law / by Robert C. Berring, Elizabeth A. Edinger.
Thomson/West, 2005
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Stewart, David W.
Secondary research: information sources methods
Sage, 1984
Buku Teks