Nault, W. H. (1968). Look again: The 1968 childcraft annual ; an annual supplement to childcraft - the how and why library. Field.
Chicago-referens (17:e uppl.)Nault, William H. Look Again: The 1968 Childcraft Annual ; an Annual Supplement to Childcraft - the How and Why Library. Chicago [u.a.]: Field, 1968.
MLA-referens (8:e uppl.)Nault, William H. Look Again: The 1968 Childcraft Annual ; an Annual Supplement to Childcraft - the How and Why Library. Field, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.