Foster, Bernard John (1966). "Stewart, Captain William W.". In McLintock, Alexander (ed.). An Encyclopaedia of New Zealand. Archived from the original on 3 April 2019. Retrieved 19 May 2019 – via Te Ara – the Encyclopedia of New Zealand.
Paterson, Donald Edgar (1966). "New Leinster, New Munster, and New Ulster". In McLintock, Alexander (ed.). An Encyclopaedia of New Zealand. Retrieved 18 May 2019 – via Te Ara – the Encyclopedia of New Zealand.
Foster, Bernard John (1966). "Stewart, Captain William W.". In McLintock, Alexander (ed.). An Encyclopaedia of New Zealand. Archived from the original on 3 April 2019. Retrieved 19 May 2019 – via Te Ara – the Encyclopedia of New Zealand.