Weigand, J. E. (1971). Developing teacher competencies. Prentice-Hall.
Citazione stile Chigago Style (17a edizione)Weigand, James E. Developing Teacher Competencies. Englewood Cliffs, N.J.: Prentice-Hall, 1971.
Citatione MLA (8a ed.)Weigand, James E. Developing Teacher Competencies. Prentice-Hall, 1971.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.