APA (7th ed.) Citation

Abbs, B., Abbs, B., Freebairn, I., & Freebairn, I. (1990). Opening strategies (18. impr.). YORK PRESS.

Chicago Style (17th ed.) Citation

Abbs, Brian, Brian Abbs, Ingrid Freebairn, and Ingrid Freebairn. Opening Strategies. 18. impr. BEIRUT: YORK PRESS, 1990.

MLA (9th ed.) Citation

Abbs, Brian, et al. Opening Strategies. 18. impr. YORK PRESS, 1990.