APA Style

Hiraku, Toyama. (). What Are Numbers ? (6 to 99) A child's first mathematics program 6 . : .

Chicago Style

Hiraku, Toyama. What Are Numbers ? (6 to 99) A child's first mathematics program 6. : , . Text.

MLA Style

Hiraku, Toyama. What Are Numbers ? (6 to 99) A child's first mathematics program 6. : , . Text.

Turabian Style

Hiraku, Toyama. What Are Numbers ? (6 to 99) A child's first mathematics program 6. : , . Print.