Litchfield, D., & Gomes, t. L. C. (2017). O gigante secreto do avô. Booksmile.
Lua i Stíl Chicago (17ú heag.)Litchfield, David, agus trad. Luísa Costa Gomes. O Gigante Secreto Do Avô. Booksmile, 2017.
Lua MLA (8ú heag.)Litchfield, David, agus trad. Luísa Costa Gomes. O Gigante Secreto Do Avô. Booksmile, 2017.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.