Gaya APA

Waerden, B, V, D., Swanson, C, P. (NULL). Modern algebra Vol II . New: New York: Frederick Ungar; 1940.

Gaya MLA

Waerden, B.L., Van, Der., Swanson, Carl, P.. "Modern algebra Vol II". New: New York: Frederick Ungar; 1940, NULL. Text.