Emergence
edited by Marc-David L. Seidel, Henrich R. Greve
Emerald, 2017
 eBooks
The peace corps
edited by Pauline Madow
H.W. Wilson, 1964
 Buku Teks SO
Evans, William J.
Astro Fit : The Astronaut program for anti-aging
Free Press, 2002
 Buku Teks SO
Ullmann-Margalit, Edna
The Emergence of norms
Clarendon Press, 1977
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Pfeiffer, John E.
The emergence of man
Harper & Row, 1969
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