LEVENBACH, H. (1981). The Beginning Forecaster The Forecasting Process Through Data Analysis Hans Levenbach And James P.cleary. Lifetime Learning Publications.
Lua i Stíl Chicago (17ú heag.)LEVENBACH, Hans. The Beginning Forecaster The Forecasting Process Through Data Analysis Hans Levenbach And James P.cleary. Lifetime Learning Publications, 1981.
Lua MLA (8ú heag.)LEVENBACH, Hans. The Beginning Forecaster The Forecasting Process Through Data Analysis Hans Levenbach And James P.cleary. Lifetime Learning Publications, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.