There are a number of databases and websites that allow you access to citations or full text of theses:
Subscription Database (requires login):
ProQuest Dissertations & Theses
This subscription database indexes research postgraduate theses from 1861 with many other countries now included span
Center for Research Libraries
This site allows you to search for 800 000 doctoral dissertations from universities outside of the United States and Canada span.
DART-Europe E-theses Portal
This portal allows access to 412196 open access research theses from 535 Universities sourced from 27 European countries.
EThOS (Electronic Theses Online System)
This database lists 250,000+ records for theses from participating UK Higher Education Institutions.
Networked Digital Library of Theses and Dissertations (NDLTD)
A digital library of electronic theses and dissertations (ETDs) from selected universities.
Includes more than 25 million records representing a wide variety of open access digital resources worldwide, including theses.
PhdData: The Universal Index of Dissertations in Progress
This database has citations from several thousand dissertations in progress from various parts of the world.
Obtaining theses from other universities
If you are unable to access a thesis you require through CDU or online, you may wish to make an interlibrary loan request for us to obtain it for you from another institution. To do so complete the online request form at: http://www.cdu.edu.au/library/forms/resources/ill.html
Requests to purchase theses can be sent to the Research Services Coordinator
This YouTube presentation is a step-by-step guide to locating theses through CDU: