Nilsen, B. (1997). Week by week: Plans for observing and recording young children. Delmar Pub.
Citazione stile Chigago Style (17a edizione)Nilsen, Barbara. Week by Week: Plans for Observing and Recording Young Children. Albany, NY: Delmar Pub, 1997.
Citatione MLA (9a ed.)Nilsen, Barbara. Week by Week: Plans for Observing and Recording Young Children. Delmar Pub, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.