Roehl, L. M. (1916). Agricultural woodworking: A group of problems for rural and graded schools, agricultural high schools and the farm workshop. The Bruce Pub. Co.
Lua i Stíl Chicago (17ú heag.)Roehl, Louis M. Agricultural Woodworking: A Group of Problems for Rural and Graded Schools, Agricultural High Schools and the Farm Workshop. Milwaukee, Wis.: The Bruce Pub. Co, 1916.
Lua MLA (8ú heag.)Roehl, Louis M. Agricultural Woodworking: A Group of Problems for Rural and Graded Schools, Agricultural High Schools and the Farm Workshop. The Bruce Pub. Co, 1916.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.