Hartnett, A., & Vaughan, J. (1988). The Liverpool Collection of Early Children's Books: A Research Resource. Occasional Paper No. 12.
Citazione stile Chigago Style (17a edizione)Hartnett, Anthony, e John Vaughan. The Liverpool Collection of Early Children's Books: A Research Resource. Occasional Paper No. 12. 1988.
Citatione MLA (9a ed.)Hartnett, Anthony, e John Vaughan. The Liverpool Collection of Early Children's Books: A Research Resource. Occasional Paper No. 12. 1988.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.