Stoikov, V. (1974). Recurrent education: A correction. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Stoikov, Vladimir. Recurrent Education: A Correction. International Labour Organization, 1974.
Citatione MLA (9a ed.)Stoikov, Vladimir. Recurrent Education: A Correction. International Labour Organization, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.