National Science Teachers Association. (1966). Helping children learn science: A selection of articles reprinted from "Science and Children". NSTA.
Chicago-referens (17:e uppl.)National Science Teachers Association. Helping Children Learn Science: A Selection of Articles Reprinted from "Science and Children". Washington: NSTA, 1966.
MLA-referens (9:e uppl.)National Science Teachers Association. Helping Children Learn Science: A Selection of Articles Reprinted from "Science and Children". NSTA, 1966.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.