1. APTER, D. (1965) The Politics of Modernization. Chicago: Univ. of Chicago Press.
2. BALETIC, M. and Z. ZIDOVEC [eds.] (1970) X Sjednica Centralnog Komiteta Saveza Komunista Hrvatske. Zagreb: Vjesnik.
3. BLALOCK, H. (1961) Causal Inferences in Non Experimental Research. Chapel Hill: Univ. of North Carolina Press.
4. BLALOCK, H.(1960) Social Statistics. New York: McGraw-Hill.