Baltimore county.

MLA

Maryland Geological Survey, et al. Baltimore County. 1929. EBSCOhost, widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsbhl&AN=edsbhl.title.69677&authtype=sso&custid=ns315887.

APA

Maryland Geological Survey, Bauer, L. A. 1865-1932, Berry, E. W., Besley, F. W. 1872-1960, Bruce, O. C. 1891, Carter, W. T. (William T. 1877, Jonas, A. I. (Anna I. 1881, Knopf, E. F. B. 1883, Mathews, E. B. 1869, Nunn, R., Snyder, J. M. . 1889, & Watson, E. H. 1902. (1929). Baltimore county.

Chicago

Maryland Geological Survey, L. A. 1865-1932 Bauer, Edward Wilber Berry, F. W. 1872-1960 Besley, Oscar Clayton, 1891 Bruce, William T. (William Thomas), 1877 Carter, Anna I. (Anna Isabel), 1881 Jonas, et al. 1929. Baltimore County. Baltimore. http://widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsbhl&AN=edsbhl.title.69677&authtype=sso&custid=ns315887.