APA (7th ed.) Citation

Akhtar, S., Saleem, W., Nadeem, V., Shahid, I., & Ikram, A. Assessment of willingness to pay for improved air quality using contingent valuation method. GJESM Publisher.

Chicago Style (17th ed.) Citation

Akhtar, S., W. Saleem, V.M Nadeem, I. Shahid, and A. Ikram. Assessment of Willingness to Pay for Improved Air Quality Using Contingent Valuation Method. GJESM Publisher.

MLA (9th ed.) Citation

Akhtar, S., et al. Assessment of Willingness to Pay for Improved Air Quality Using Contingent Valuation Method. GJESM Publisher.