Gaya APA

899. (1). : Ladybird Book.

Gaya Chicago

899. Key Words have a go 2b. : Ladybird Book, 1. 08/C/ING/056.

Gaya MLA

899. Key Words have a go 2b. : Ladybird Book, 1. 08/C/ING/056.

Gaya Turabian

899. : Ladybird Book, 1. 08/C/ING/056.