APA

Bilmanis A., . (1951). A history of Latvia. Princeton, N.J: Princeton University Press.

Chicago

Bilmanis Alfreds, . 1951. A history of Latvia. Princeton, N.J: Princeton University Press.

Harvard

Bilmanis A., . (1951). A history of Latvia. Princeton, N.J: Princeton University Press.

MLA

Bilmanis Alfreds, . A history of Latvia. Princeton, N.J: Princeton University Press. 1951.