Zeigler, J. (1991). Why Do Elephant's Wear Purple Suspenders? Smithmark Pub.
Lua i Stíl Chicago (17ú heag.)Zeigler, Judy. Why Do Elephant's Wear Purple Suspenders? New York: Smithmark Pub, 1991.
Lua MLA (8ú heag.)Zeigler, Judy. Why Do Elephant's Wear Purple Suspenders? Smithmark Pub, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.