APA (7th ed.) Citation

Edwin, D., & Sabri, N. A. (2013). The effectiveness of book voucher / Danny Edwin and Noor Azyra Sabri.

Chicago Style (17th ed.) Citation

Edwin, Danny, and Noor Azyra Sabri. The Effectiveness of Book Voucher / Danny Edwin and Noor Azyra Sabri. 2013.

MLA (9th ed.) Citation

Edwin, Danny, and Noor Azyra Sabri. The Effectiveness of Book Voucher / Danny Edwin and Noor Azyra Sabri. 2013.

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