Jenkyns, H., Gale, A., & Corfield, R. (1994). CARBON-ISOTOPE AND OXYGEN-ISOTOPE STRATIGRAPHY OF THE ENGLISH CHALK AND ITALIAN SCAGLIA AND ITS PALEOCLIMATIC SIGNIFICANCE.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJenkyns, H., A. Gale, और R. Corfield. CARBON-ISOTOPE AND OXYGEN-ISOTOPE STRATIGRAPHY OF THE ENGLISH CHALK AND ITALIAN SCAGLIA AND ITS PALEOCLIMATIC SIGNIFICANCE. 1994.
एमएलए (9वां संस्करण) प्रशस्ति पत्रJenkyns, H., et al. CARBON-ISOTOPE AND OXYGEN-ISOTOPE STRATIGRAPHY OF THE ENGLISH CHALK AND ITALIAN SCAGLIA AND ITS PALEOCLIMATIC SIGNIFICANCE. 1994.
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