Cite
Glacial-eustatic sea-level curve for early Late Pennsylvanian sequence in north-central Texas and biostratigraphic correlation with curve for midcontinent North America
MLA
Boardman, Darwin R., II, and Philip H. Heckel. “Glacial-Eustatic Sea-Level Curve for Early Late Pennsylvanian Sequence in North-Central Texas and Biostratigraphic Correlation with Curve for Midcontinent North America.” Geology, vol. 17, no. 9, Sept. 1989, p. 802. 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=edsggo&AN=edsgcl.11702269&authtype=sso&custid=ns315887.
APA
Boardman, D. R., II, & Heckel, P. H. (1989). Glacial-eustatic sea-level curve for early Late Pennsylvanian sequence in north-central Texas and biostratigraphic correlation with curve for midcontinent North America. Geology, 17(9), 802.
Chicago
Boardman, Darwin R., II, and Philip H. Heckel. 1989. “Glacial-Eustatic Sea-Level Curve for Early Late Pennsylvanian Sequence in North-Central Texas and Biostratigraphic Correlation with Curve for Midcontinent North America.” Geology 17 (9): 802. 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=edsggo&AN=edsgcl.11702269&authtype=sso&custid=ns315887.