McDaniels, W. D., & Wilson, L. A. (1920). Letter writing for the business builder: A textbook for high schools, business colleges, private schools, religious schools. Ellis Pub..
Lua i Stíl Chicago (17ú heag.)McDaniels, William Demoss, agus LaVerne Albert Wilson. Letter Writing for the Business Builder: A Textbook for High Schools, Business Colleges, Private Schools, Religious Schools. Battle Creek, Mich.: Ellis Pub., 1920.
Lua MLA (8ú heag.)McDaniels, William Demoss, agus LaVerne Albert Wilson. Letter Writing for the Business Builder: A Textbook for High Schools, Business Colleges, Private Schools, Religious Schools. Ellis Pub., 1920.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.