Haurongo: Ashworth, James rāua ko Ashworth, James
He whakaaturanga anō
Rārangi pukapuka
Ashworth, J. (jnr). Personal papers, 1853--1919. MS. CP
The Cyclopedia of New Zealand. Vol. 3. Christchurch, 1903
Hawkins, D. N. Beyond the Waimakariri. Christchurch, 1957
Obit. [J. Ashworth (jnr)]. Christchurch Times. 20 July 1932