edited by Warren J. Samuels, Jeff E. Biddle, John B. Davis
Blackwell, 2003
Buku Teks
edited by David Greenaway, Michael Bleaney, and Ian Stewart
Routledge, 1991
Buku Referensi
Macgregor, D.H.
Oxford University Press, 1949
Buku Teks
Roll, Eric
Prentice-Hall, 1959
Buku Teks
edited by Luca Fiorito, Scott Scheall, Carlos Eduardo Suprinyak
Emerald, 2016
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