Galván, E. T. (1972). Some comments on the Spanish trade union act of 17 February 1971. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Galván, Enrique Tierno. Some Comments on the Spanish Trade Union Act of 17 February 1971. International Labour Organization, 1972.
Citatione MLA (9a ed.)Galván, Enrique Tierno. Some Comments on the Spanish Trade Union Act of 17 February 1971. International Labour Organization, 1972.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.