Maple, James
Advanced chemistry : an enquiry-based approach
John Murray, 1996
 Buku Teks
Clough, Peter
A student's guide to methodology : justifying enquiry
Sage Publications, 2002
 Buku Referensi
Yoshino, Kosaku
Cultural nationalism in contemporary Japan a sociological enquiry
Routledge , 1992
 Buku Teks
Koen Vermeir
The science of sensibility: reading Burke?s philosophical enquiry
Springer, 2012
 eBooks
Duckett, Bob
Know it all it fast: an A-Z source guide for the enquiry desk
Facet Publishing , 2002
 Buku Teks