Verma, V. (2013). Sampling elusive populations: Applications to studies of child labour. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Verma, Vijay. Sampling Elusive Populations: Applications to Studies of Child Labour. International Labour Organization, 2013.
Citatione MLA (9a ed.)Verma, Vijay. Sampling Elusive Populations: Applications to Studies of Child Labour. International Labour Organization, 2013.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.