Oxford University Press (OUP), 1968

Project MUSE, 1969

Academy of Political Science, 1968

Elsevier BV, 1970

Wesleyan University Press, 1966

JSTOR, 1967

Cambridge University Press (CUP), 1964

Cambridge University Press (CUP), 1965

JSTOR, 1965

Mouton and Co. Publishers, 1965

American Association for the Advancement of Slavic Studies, 1965

Project MUSE, 1965

JSTOR, 1967

JSTOR, 1963

JSTOR, 1971

JSTOR, 1971

JSTOR, 1969

JSTOR, 1969

JSTOR, 1963

SAGE Publications, 1962