APA-viite

Fran, H. (1977). Three little pigs. Ladybird Books.

Chicago-tyylinen lähdeviittaus

Fran, Hunia. Three Little Pigs. Loughborough: Ladybird Books, 1977.

MLA-viite

Fran, Hunia. Three Little Pigs. Ladybird Books, 1977.