APA (7th ed.) Citation

Dudeja, S. (1992). Countdown, 5: Level five maths. Oxford university press.

Chicago Style (17th ed.) Citation

Dudeja, Shamlu. Countdown, 5: Level Five Maths. Delhi: Oxford university press, 1992.

MLA (9th ed.) Citation

Dudeja, Shamlu. Countdown, 5: Level Five Maths. Oxford university press, 1992.