Forchheimer, S. (1972). Scanning electron microscope studies of Cretaceous coccoliths from the Köpingsberg Borehole No. 1, SE Sweden. [Sveriges geologiska undersökning].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रForchheimer, Sylvia. Scanning Electron Microscope Studies of Cretaceous Coccoliths from the Köpingsberg Borehole No. 1, SE Sweden. Stockholm: [Sveriges geologiska undersökning], 1972.
एमएलए (8वां संस्करण) प्रशस्ति पत्रForchheimer, Sylvia. Scanning Electron Microscope Studies of Cretaceous Coccoliths from the Köpingsberg Borehole No. 1, SE Sweden. [Sveriges geologiska undersökning], 1972.
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