Preface.

MLA

Martens, Koen. “Preface.” Hydrobiologia, vol. 501, no. 1–3, July 2003, pp. vii–viii. 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=edb&AN=14973735&authtype=sso&custid=ns315887.

APA

Martens, K. (2003). Preface. Hydrobiologia, 501(1–3), vii–viii.

Chicago

Martens, Koen. 2003. “Preface.” Hydrobiologia 501 (1–3): vii–viii. 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=edb&AN=14973735&authtype=sso&custid=ns315887.