Othman, A. S., & Ali, A. (2002). Biodiversity resources of Ahning Lake. Pulau Pinang : Universiti Sains Malaysia.
Lua i Stíl Chicago (17ú heag.)Othman, Ahmad Sofiman, agus Ahyaudin Ali. Biodiversity Resources of Ahning Lake. Pulau Pinang : Universiti Sains Malaysia, 2002.
Lua MLA (9ú heag.)Othman, Ahmad Sofiman, agus Ahyaudin Ali. Biodiversity Resources of Ahning Lake. Pulau Pinang : Universiti Sains Malaysia, 2002.
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