APA (7th ed.) Citation

Helmi, K. (2010). An Experimental Study on the Effectiveness of Powerpoint Presentation in Teaching Prepositions.

Chicago Style (17th ed.) Citation

Helmi, Kasim. An Experimental Study on the Effectiveness of Powerpoint Presentation in Teaching Prepositions. 2010.

MLA (9th ed.) Citation

Helmi, Kasim. An Experimental Study on the Effectiveness of Powerpoint Presentation in Teaching Prepositions. 2010.

Warning: These citations may not always be 100% accurate.