Carbon isotopic evidence for photosynthesis in early Cambrian oceans

MLA

Surge, Donna M., et al. “Carbon Isotopic Evidence for Photosynthesis in Early Cambrian Oceans.” Geology, vol. 25, no. 6, June 1997, p. 503. 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.19554379&authtype=sso&custid=ns315887.

APA

Surge, D. M., Savarese, M., Dodd, J. R., & Lohmann, K. C. (1997). Carbon isotopic evidence for photosynthesis in early Cambrian oceans. Geology, 25(6), 503.

Chicago

Surge, Donna M., Michael Savarese, J. Robert Dodd, and Kyger C. Lohmann. 1997. “Carbon Isotopic Evidence for Photosynthesis in Early Cambrian Oceans.” Geology 25 (6): 503. 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.19554379&authtype=sso&custid=ns315887.