Quetico-Superior Wilderness Research Center & Lakela, O. (1962). Revised check-list of ferns and flowering plants of the Quetico-Superior Wilderness Research Center. the Center.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रQuetico-Superior Wilderness Research Center और Olga Lakela. Revised Check-list of Ferns and Flowering Plants of the Quetico-Superior Wilderness Research Center. Ely, Minn.: the Center, 1962.
एमएलए (8वां संस्करण) प्रशस्ति पत्रQuetico-Superior Wilderness Research Center और Olga Lakela. Revised Check-list of Ferns and Flowering Plants of the Quetico-Superior Wilderness Research Center. the Center, 1962.
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