Cita APA (7a ed.)

Filippov, F. (1990). Continuous education, democracy, and society: When learning is a need. [s.n.].

Cita Chicago Style (17a ed.)

Filippov, F. Continuous Education, Democracy, and Society: When Learning Is a Need. [S.l.]: [s.n.], 1990.

Cita MLA (9a ed.)

Filippov, F. Continuous Education, Democracy, and Society: When Learning Is a Need. [s.n.], 1990.