APA

Laubach F. C., . (1951). Streamlined English: the new easier way to learn. New York: Macmillan.

Chicago

Laubach Frank Charles, . 1951. Streamlined English: the new easier way to learn. New York: Macmillan.

Harvard

Laubach F. C., . (1951). Streamlined English: the new easier way to learn. New York: Macmillan.

MLA

Laubach Frank Charles, . Streamlined English: the new easier way to learn. New York: Macmillan. 1951.