Cita APA (7a ed.)

Abstracts of communications: Presented at de XVth World Congress of Philosophy. Varna, Sept. 17-22, 1973. Bulgarian Organizing Committee.

Cita Chicago Style (17a ed.)

Abstracts of Communications: Presented at De XVth World Congress of Philosophy. Varna, Sept. 17-22, 1973. Varna (Bulgaria): Bulgarian Organizing Committee.

Cita MLA (9a ed.)

Abstracts of Communications: Presented at De XVth World Congress of Philosophy. Varna, Sept. 17-22, 1973. Bulgarian Organizing Committee.