Ruggles, S., & Menard, R. R. (1995). The Minnesota Historical Census Project. Historical methods, 28(1), 6-10. doi:10.1080/01615440.1995.9955308
Cita Chicago Style (17a ed.)Ruggles, Steven, y Russell R. Menard. "The Minnesota Historical Census Project." Historical Methods 28, no. 1 (1995): 6-10. https://doi.org/10.1080/01615440.1995.9955308.
Cita MLA (9a ed.)Ruggles, Steven, y Russell R. Menard. "The Minnesota Historical Census Project." Historical Methods, vol. 28, no. 1, 1995, pp. 6-10, https://doi.org/10.1080/01615440.1995.9955308.
Precaución: Estas citas no son 100% exactas.