Lua APA (7ú heag.)

Gladden, W. (1904). Where does the sky begin? Houghton, Mifflin and company.

Lua i Stíl Chicago (17ú heag.)

Gladden, Washington. Where Does the Sky Begin? Boston and New York: Houghton, Mifflin and company, 1904.

Lua MLA (8ú heag.)

Gladden, Washington. Where Does the Sky Begin? Houghton, Mifflin and company, 1904.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.