1. Anon (1976 ) - Pets as a social phenomenon - A study of man-pet interactions in urban communities, Petcare Information and Advisory Service, Melbourne.
2. Anon (1983 ) - Cat ownership in Australia: an attitude and opinion study, Petcare Information and Advisory Service, Melbourne.
3. P. Leyhausen (1985 ) - In: TheHuman-Pet Relationship, Austrian Acad Sci (Institute for Interdisciplinary Research on the Human-Pet Relationship), Vienna.