Winkelstein, W., & Graham, S. (1959). Factors in Participation in the 1954 Poliomyelitis Vaccine Field Trials, Erie County, New York.
Chicago-stil citatWinkelstein, Warren, och Saxon Graham. Factors in Participation in the 1954 Poliomyelitis Vaccine Field Trials, Erie County, New York. 1959.
MLA-referensWinkelstein, Warren, och Saxon Graham. Factors in Participation in the 1954 Poliomyelitis Vaccine Field Trials, Erie County, New York. 1959.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.