Pitman, B., & Howard, J. B. (1915). Business letters ..: In the amanuensis style of phonography. Phonographic Institute Co..
Lua i Stíl Chicago (17ú heag.)Pitman, Benn, agus Jerome B. Howard. Business Letters ..: In the Amanuensis Style of Phonography. Cincinnati: Phonographic Institute Co., 1915.
Lua MLA (8ú heag.)Pitman, Benn, agus Jerome B. Howard. Business Letters ..: In the Amanuensis Style of Phonography. Phonographic Institute Co., 1915.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.