المؤلفون: Almeida, Wolney Gomes
Original Material: Edition: DGO - Digital original
الإتاحة: https://www.jstor.org/stable/10.7476/9788574555270
المؤلفون: Glat, Rosana, Pletsch, Marcia Denise
Original Material: 164 p.
الإتاحة: https://www.jstor.org/stable/10.7476/9788575114414