Lua APA (7ú heag.)

HELFERT ERICH A. (1988). TECHNIQUES OF FINANCIAL ANALYSIS (6.). UNIVERSAL BOOKS.

Lua i Stíl Chicago (17ú heag.)

HELFERT ERICH A. TECHNIQUES OF FINANCIAL ANALYSIS. 6. NEW DELHI: UNIVERSAL BOOKS, 1988.

Lua MLA (9ú heag.)

HELFERT ERICH A. TECHNIQUES OF FINANCIAL ANALYSIS. 6. UNIVERSAL BOOKS, 1988.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.