1. Perceptions of time. In T;Adam,1994
2. Allen , B.J. R.M. Bourke 1997 Report of an assessment of the impact of frost and drought in Papua New Guinea. Australian Agency for International Development http//www.ausaid.gov.au/publications/general/other/pngdroughtrep.pdf
3. Sky calendars of the Indo-Malay archipelago: Regional diversity/local knowledge;Ammarrell;Indonesia,1988
4. The seasonal calendar of Kiriwina, Trobriand Islands;Austen;Oceania,1939