SOUTH WATER PUB. (2000). LOOK & LEARN NUMBERS A FIRST POINT & SAY BOOK. SOUTH WATER PUB.
Chicago-referens (17:e uppl.)SOUTH WATER PUB. LOOK & LEARN NUMBERS A FIRST POINT & SAY BOOK. HONG KONG: SOUTH WATER PUB, 2000.
MLA-referens (9:e uppl.)SOUTH WATER PUB. LOOK & LEARN NUMBERS A FIRST POINT & SAY BOOK. SOUTH WATER PUB, 2000.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.