Christison, M. (1977). Student Contracts As One Method for Individualizing a Course Concerned with the "Selection of Instructional Materials.".
Citazione stile Chigago Style (17a edizione)Christison, Milton. Student Contracts As One Method for Individualizing a Course Concerned with the "Selection of Instructional Materials.". 1977.
Citatione MLA (9a ed.)Christison, Milton. Student Contracts As One Method for Individualizing a Course Concerned with the "Selection of Instructional Materials.". 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.