Grolier Limited. (1989). "Questions Kids Ask About Birds (Questions Kids Ask, 7)". Grolier Limited.
Čikaški stil citiranja (17. izdanje)Grolier Limited. "Questions Kids Ask About Birds (Questions Kids Ask, 7)". Grolier Limited, 1989.
MLA način citiranja (9. izdanje)Grolier Limited. "Questions Kids Ask About Birds (Questions Kids Ask, 7)". Grolier Limited, 1989.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.