Leokum, A. (1991). Still more tell me why: Answers to hundreds of questions children ask. Dean.
Chicago-referens (17:e uppl.)Leokum, Arkady. Still More Tell Me Why: Answers to Hundreds of Questions Children Ask. London: Dean, 1991.
MLA-referens (9:e uppl.)Leokum, Arkady. Still More Tell Me Why: Answers to Hundreds of Questions Children Ask. Dean, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.