APA (7th ed.) Citation

Sommer, F. (1943). Reading Chinese step by step. Ungar.

Chicago Style (17th ed.) Citation

Sommer, F.E. Reading Chinese Step by Step. [New York]: Ungar, 1943.

MLA (9th ed.) Citation

Sommer, F.E. Reading Chinese Step by Step. Ungar, 1943.

Warning: These citations may not always be 100% accurate.