Laugksch, R., A. Rakumako, T. Manyelo, and D. Mabye. “Development and Validation of the Science Teacher Inventory of Needs for Limpopo Province (STIN-LP)”. South African Journal of Education, vol. 25, no. 4, Dec. 2005, pp. 273-8, doi:10.4314/saje.v25i4.25048.