Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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