Keirstead, B. (1959). Capital interst and profits. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Keirstead, B. Capital Interst and Profits. New York: John Wiley & Sons, 1959.
Lua MLA (9ú heag.)Keirstead, B. Capital Interst and Profits. John Wiley & Sons, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.