Azizan, M., Zulkeflli, A. E., & Azizan, K. (2020). Residents perception of and participation in solid waste recycling in Langkawi / Muhammad Azizan. Universiti Teknologi Mara Cawangan Pulau Pinang.
Čikaški stil citiranja (17. izdanje)Azizan, Muhammad, Adie Effendi Zulkeflli, i Kamil Azizan. Residents Perception of and Participation in Solid Waste Recycling in Langkawi / Muhammad Azizan. Universiti Teknologi Mara Cawangan Pulau Pinang, 2020.
MLA način citiranja (9. izdanje)Azizan, Muhammad, et al. Residents Perception of and Participation in Solid Waste Recycling in Langkawi / Muhammad Azizan. Universiti Teknologi Mara Cawangan Pulau Pinang, 2020.
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