Stott, Philip
Historical plant geography : an introduction
Allen & Unwin, 1981
 Buku Referensi
Losee, John
A Historical introduction to the philosophy of science
Oxford University Press, 1980
 Buku Teks SO
Lehmann, Winfred P.
Historical linguistics : an introduction
Holt, Rinehart & Winston, 1973
 Buku Teks SO
Moore, Raymond C.
Introduction to historical geology
McGraw-Hill, 1958
 Buku Teks
Lehmann, Winfred P.
Historical linguistics: an introduction
Holt, Rinehart and Winston, 1962
 Buku Teks SO