APA

Ritter H. L., . (1955). An introduction to chemistry. New York: Wiley.

Chicago

Ritter Howard L, . 1955. An introduction to chemistry. New York: Wiley.

Harvard

Ritter H. L., . (1955). An introduction to chemistry. New York: Wiley.

MLA

Ritter Howard L, . An introduction to chemistry. New York: Wiley. 1955.