APA (7th ed.) Citation

Ashworth, J., & Clark, J. (1997). New stepping stones: Teacher's guide (1ª ed.).

Chicago Style (17th ed.) Citation

Ashworth, Julie, and John Clark. New Stepping Stones: Teacher's Guide. 1ª ed. Edinburgh, 1997.

MLA (9th ed.) Citation

Ashworth, Julie, and John Clark. New Stepping Stones: Teacher's Guide. 1ª ed. 1997.