Cite
Stuivende mariene gronden
MLA
van der Spek, J. Stuivende Mariene Gronden. 1950. 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=edsoai&AN=edsoai.on1350238804&authtype=sso&custid=ns315887.
APA
van der Spek, J. (1950). Stuivende mariene gronden.
Chicago
van der Spek, J. 1950. “Stuivende Mariene Gronden.” 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=edsoai&AN=edsoai.on1350238804&authtype=sso&custid=ns315887.