Forbes, S., Campbell, T. C., & Campbell, N. (2015). PlantPure nation: The truth is a stubborn thing. It doesn't go away (Limited edition.). PlantPure Productions LCC.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रForbes, Steve, T. Colin Campbell, और Nelson Campbell. PlantPure Nation: The Truth Is a Stubborn Thing. It Doesn't Go Away. Limited edition. [Charlotte, North Carolina]: PlantPure Productions LCC, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रForbes, Steve, et al. PlantPure Nation: The Truth Is a Stubborn Thing. It Doesn't Go Away. Limited edition. PlantPure Productions LCC, 2015.
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