edited by Arthur Shapiro and Dejan Todorovic
Oxford University Press, 2017
Buku Teks
Spiller, Neil
Academy Group, 2001
Buku Teks
Slouka, Mark
Vintage Contemporaries, 1998
Buku Teks
Cottrell, Leonard
Rinehart, 1957
Buku Teks
Cleator, PE
Mentor Book, 1962
Buku Teks