Thirkell, J. E. M., & Tseneva, E. A. (1992). Bulgarian labour relations in transition: Tripartism and collective bargaining. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Thirkell, John E. M., e Elena Atanassova Tseneva. Bulgarian Labour Relations in Transition: Tripartism and Collective Bargaining. International Labour Organization, 1992.
Citatione MLA (9a ed.)Thirkell, John E. M., e Elena Atanassova Tseneva. Bulgarian Labour Relations in Transition: Tripartism and Collective Bargaining. International Labour Organization, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.