Rullan, M. E. (2001). Gagawing composting, recycling plant: MM, may bago nang landfill. Kabayan.
Chicago-viite (17. p.)Rullan, Mercedes E. "Gagawing Composting, Recycling Plant: MM, May Bago Nang Landfill." Kabayan 2001.
MLA-viite (9. p.)Rullan, Mercedes E. "Gagawing Composting, Recycling Plant: MM, May Bago Nang Landfill." Kabayan, 2001.
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