1. Aarhaug, J. (2016). Taxis as a part of public transport (16; Sustainable urban transport technical document). Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH.
2. A first estimate of the structure and density of the populations of pet cats and dogs across Great Britain
3. Agriculture Fisheries and Conservation Department (2022 July 23). Animal management (vet clinics list) . Agriculture Fisheries and Conservation Department. Retrieved from https://www.pets.gov.hk/english/animal_business/vet_clinics_list.html
4. Auckland Transport (2022). Taking animals on public transport. Auckland Transport. Retrieved from https://at.govt.nz/bus-train-ferry/luggage-bikes-animals/taking-animals-on-public-transport/
5. Audit Commission (2017). Management of squatter and licensed structures. Author.