Comrie, Bernard, 1947-
Aspect
Cambridge University Press, 1976
 Buku Teks SO
Comrie, Bernard, 1947-
Aspect
Cambridge University Press, 1976
 Buku Teks SO
Smith, Carlota S.
The parameter of aspect
Kluwer Academic, 1991
 Buku Teks SO
Environmental aspect of nuclear power
The Institution of Mechanical Engineers, 1993
 Buku Teks
The weight aspect in aircraft design
 Artikel Jurnal