Lewis, R. W. (1989). Elementary School Children Express Their Need for Catalog Information.
Citazione stile Chigago Style (17a edizione)Lewis, Roberta Welsh. Elementary School Children Express Their Need for Catalog Information. 1989.
Citatione MLA (9a ed.)Lewis, Roberta Welsh. Elementary School Children Express Their Need for Catalog Information. 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.