APA

Walker M., . (1964). Germany and the emigration 1816–1885. Cambridge, Massachusetts: Harvard University Press.

Chicago

Walker Mack, . 1964. Germany and the emigration 1816–1885. Cambridge, Massachusetts: Harvard University Press.

Harvard

Walker M., . (1964). Germany and the emigration 1816–1885. Cambridge, Massachusetts: Harvard University Press.

MLA

Walker Mack, . Germany and the emigration 1816–1885. Cambridge, Massachusetts: Harvard University Press. 1964.