Cambridge : The American Academy of Arts and Sciences
Majalah, Jurnal, Buletin
University of Carolina
[place of publication not identified]: [publisher not identified], [date of publication not identified]
Buku Teks
University of Carolina
[place of publication not identified]: [publisher not identified], [date of publication not identified]
Buku Teks
Brauer, Richard
W.A. Benjamin, 1969
Buku Teks
editor by O.H. Muth
The Avi Publisher, 1967
Buku Teks