Trybom, J. H., O'Connor, E. F., & Wilson, A. E. (1907). Manual training: Cardboard construction. M. Bradley co..
Lua i Stíl Chicago (17ú heag.)Trybom, John Herman, Ellen Frances O'Connor, agus Abbie Ellen Wilson. Manual Training: Cardboard Construction. Springfield, Mass., New York [etc.]: M. Bradley co., 1907.
Lua MLA (8ú heag.)Trybom, John Herman, et al. Manual Training: Cardboard Construction. M. Bradley co., 1907.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.