Berry, William D. Nonrecursive causal models William D. Berry - Thousand Oaks Sage Publications 1984 - 95 p. gráf. 22 - A Sage University paper Quantitative applications in the social sciences 37 . Inclúe referencias bibliográficas (p. 93-94) ISBN: 0-8039-2265-5 Subjects--Topical Terms: Estatística