Higgs, N. E. (1964). A Plan for Individualizing Instruction for the Senior Government Class Through Use of Problem Solving Units. Colorado Western States Small Schools Project Documentation (Silverton High School, Silverton, Colorado, 1963-64).
Citazione stile Chigago Style (17a edizione)Higgs, Norman E. A Plan for Individualizing Instruction for the Senior Government Class Through Use of Problem Solving Units. Colorado Western States Small Schools Project Documentation (Silverton High School, Silverton, Colorado, 1963-64). 1964.
Citatione MLA (9a ed.)Higgs, Norman E. A Plan for Individualizing Instruction for the Senior Government Class Through Use of Problem Solving Units. Colorado Western States Small Schools Project Documentation (Silverton High School, Silverton, Colorado, 1963-64). 1964.