Nordamerika : Sonderkarten zur Landerkunde. Gotha : Justus Perthes. Sydow-Wagners method. Schul-Atlas. XXII.

MLA

Sydow, Emil von., et al. Nordamerika : Sonderkarten Zur Landerkunde. Gotha : Justus Perthes. Sydow-Wagners Method. Schul-Atlas. XXII. Jan. 1943. 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=edsluc&AN=edsluc.RUMSEY.8.1.356612.90123529&authtype=sso&custid=ns315887.

APA

Sydow, E. von., Wagner, H., Haack, H., Lautensach, H., & Stollt, O. (1943). Nordamerika : Sonderkarten zur Landerkunde. Gotha : Justus Perthes. Sydow-Wagners method. Schul-Atlas. XXII.

Chicago

Sydow, Emil von., Hermann Wagner, Hermann Haack, Hermann Lautensach, and O. Stollt. 1943. “Nordamerika : Sonderkarten Zur Landerkunde. Gotha : Justus Perthes. Sydow-Wagners Method. Schul-Atlas. XXII,” January. 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=edsluc&AN=edsluc.RUMSEY.8.1.356612.90123529&authtype=sso&custid=ns315887.