APA
Sullivan A. P., . (2007). Archaeological survey design unit of observation and the characterization of Regional variability. Washington-US: Society for American Archaeology.
Chicago
Sullivan Alan P, . 2007. Archaeological survey design unit of observation and the characterization of Regional variability. Washington-US: Society for American Archaeology.
Harvard
Sullivan A. P., . (2007). Archaeological survey design unit of observation and the characterization of Regional variability. Washington-US: Society for American Archaeology.
MLA
Sullivan Alan P, . Archaeological survey design unit of observation and the characterization of Regional variability. Washington-US: Society for American Archaeology. 2007.