Satu atau lebih kalimat sebelum inimenyertakan teks dari suatu terbitan yang sekarang berada pada ranah publik:Chisholm, Hugh, ed. (1911). "Alabaster". Encyclopædia Britannica. Vol.1 (Edisi 11). Cambridge University Press. hlm.466–467.
More about alabaster and travertine, brief guide explaining the different use of these words by geologists, archaeologists, and those in the stone trade. Oxford University Museum of Natural History, 2012,
"Grove": R. W. Sanderson and Francis Cheetham. "Alabaster", Grove Art Online, Oxford Art Online, Oxford University Press, diakses 13 Maret 2013, subscriber link.