Headstrom, R. (1968). Nature in miniature. Alfred A. Knop.
Lua i Stíl Chicago (17ú heag.)Headstrom, Richard. Nature in Miniature. New York: Alfred A. Knop, 1968.
Lua MLA (9ú heag.)Headstrom, Richard. Nature in Miniature. Alfred A. Knop, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.