APA (7th ed.) Citation

Alexander, L. G. (1979). Mainline beginners B: Teacher's book. Longman.

Chicago Style (17th ed.) Citation

Alexander, Louis George. Mainline Beginners B: Teacher's Book. Londres: Longman, 1979.

MLA (9th ed.) Citation

Alexander, Louis George. Mainline Beginners B: Teacher's Book. Longman, 1979.