APA

(1967). Lectures on some problems of trade union structure and trade union work among the working people in the P. R. of Bulgaria. Sofia: Profizdat.

Chicago

1967. Lectures on some problems of trade union structure and trade union work among the working people in the P. R. of Bulgaria. Sofia: Profizdat.

Harvard

(1967). Lectures on some problems of trade union structure and trade union work among the working people in the P. R. of Bulgaria. Sofia: Profizdat.

MLA

Lectures on some problems of trade union structure and trade union work among the working people in the P. R. of Bulgaria. Sofia: Profizdat. 1967.