Historical Methods
Helen Dwight Reid Educational Foundation, {s.a}
 Majalah, Jurnal, Buletin
Gottschalk, Louis
Understanding history : a primer of historical method
Alfred A. Knoff, 1969
 Buku Teks SO
Boomsma, Graa
Clio's kamer
Promotheus, 1994
 Buku Teks
Gottschalk, Louis
Mengerti sejarah = Understanding history : a primer of historical method
UI-Press, [date of publication not identified]
 Buku Teks SO
Gottschalk, Louis
Mengerti sejarah = Understanding history: a primer of historical method
UI-Press, 1985
 Buku Teks SO