lekachman, r., & novack, d. E. (1964). Development and society the dynamics of economic change. st martin's press.
Lua i Stíl Chicago (17ú heag.)lekachman, robert, agus david E. novack. Development and Society the Dynamics of Economic Change. new york: st martin's press, 1964.
Lua MLA (9ú heag.)lekachman, robert, agus david E. novack. Development and Society the Dynamics of Economic Change. st martin's press, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.