New York (State) Division of the Budget. Office of Statistical Coordination. (1967). Guidelines for sampling. s.n.
Citazione stile Chigago Style (17a edizione)New York (State) Division of the Budget. Office of Statistical Coordination. Guidelines for Sampling. Albany: s.n, 1967.
Citatione MLA (9a ed.)New York (State) Division of the Budget. Office of Statistical Coordination. Guidelines for Sampling. s.n, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.