Hanson, J. W., Ferns, G. W., & King, V. E. (1970). Secondary level teachers: Supply and demand in Sierra Leone. Institute for International Studies in Education, Michigan State University.
Citazione stile Chigago Style (17a edizione)Hanson, John Wagner, George W. Ferns, e Victor E. King. Secondary Level Teachers: Supply and Demand in Sierra Leone. [East Lansing: Institute for International Studies in Education, Michigan State University, 1970.
Citatione MLA (8a ed.)Hanson, John Wagner, et al. Secondary Level Teachers: Supply and Demand in Sierra Leone. Institute for International Studies in Education, Michigan State University, 1970.
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