Não informado. (1969). Learning and Development. McGill University, Centre for Learning and Development.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Learning and Development. Montreal, Canada: McGill University, Centre for Learning and Development, 1969.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Learning and Development. McGill University, Centre for Learning and Development, 1969.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.