[1] Chart: Manukau Harbour; Byron Drury - New Zealand Maritime Museum on NZMuseums (2018-06-30 21:16:18 +09:00) <http://www.nzmuseums.co.nz/account/3358/object/837166>
[2] Drury | NZHistory, New Zealand history online (2018-06-30 21:17:27 +09:00) <https://nzhistory.govt.nz/keyword/drury>