Rätselhaft klar.

MLA

Brotbeck, Roman. “Rätselhaft Klar. (German).” Opernwelt, Dec. 2018, pp. 30–31. 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=edo&AN=133145108&authtype=sso&custid=ns315887.

APA

Brotbeck, R. (2018). Rätselhaft klar. (German). Opernwelt, 30–31.

Chicago

Brotbeck, Roman. 2018. “Rätselhaft Klar. (German).” Opernwelt, December, 30–31. 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=edo&AN=133145108&authtype=sso&custid=ns315887.