Cita APA (7th ed.)
Robertson, J. G., & Purdie, E. (1959). A History of German literature: 3.ed., revis.and enl.by Edna Purdie with the ass. of.. Blackwood.
Cita Chicago (17th ed.)
Robertson, John George, i Edna Purdie. A History of German Literature: 3.ed., Revis.and Enl.by Edna Purdie with the Ass. of.. Edinburgh: Blackwood, 1959.
Cita MLA (9th ed.)
Robertson, John George, i Edna Purdie. A History of German Literature: 3.ed., Revis.and Enl.by Edna Purdie with the Ass. of.. Blackwood, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.