APA

Birkinshaw، Marie, Freake، Caroline, .Fastest Pony Ever. London: Ladybird.

Chicago

Birkinshaw، Marie, Freake، Caroline, .Fastest Pony Ever. London: Ladybird.

Harvard

Birkinshaw، Marie, Freake، Caroline, .Fastest Pony Ever. London: Ladybird.

MLA

Birkinshaw، Marie, Freake، Caroline, .London: Ladybird. .