Watkins 2000, "The Indo-Europeans knew snow in their homeland; the word sneigwh- is nearly ubiquitous.". Watkins, Calvert (2000), „Indo-European and the Indo-Europeans”, The American Heritage Dictionary of the English Language (на језику: енглески) (4 изд.), Houghton Mifflin Company, Архивирано из оригинала 1. 3. 2009. г.
Watkins 2000, "Yet, for the Indo-European-speaking society, we can reconstruct with certainty the word for “god,” *deiw-os, and the two-word name of the chief deity of the pantheon, *dyeu-pəter- (Latin Iūpiter, Greek Zeus patēr, Sanskrit Dyauṣ pitar, and Luvian Tatis Tiwaz).". Watkins, Calvert (2000), „Indo-European and the Indo-Europeans”, The American Heritage Dictionary of the English Language (на језику: енглески) (4 изд.), Houghton Mifflin Company, Архивирано из оригинала 1. 3. 2009. г.
Watkins 2000, "A large number of kinship terms have been reconstructed. They are agreed in pointing to a society that was patriarchal, patrilocal (the bride leaving her household to join that of her husband’s family), and patrilineal (descent reckoned by the male line). “Father” and “head of the household” are one: pǝter-, with his spouse, the māter-.". Watkins, Calvert (2000), „Indo-European and the Indo-Europeans”, The American Heritage Dictionary of the English Language (на језику: енглески) (4 изд.), Houghton Mifflin Company, Архивирано из оригинала 1. 3. 2009. г.
Mallory, J. P.; Adams, Douglas Q. (1997). Encyclopedia of Indo-European Culture (на језику: енглески). Taylor & Francis. стр. 4 and 6 (Afanasevo), 13 and 16 (Anatolia), 243 (Greece), 127—128 (Corded Ware), and 653 (Yamna). ISBN978-1-884964-98-5. Приступљено 2. 4. 2020.
Fagan, Brian M.; Beck, Charlotte; Michaels, George; Scarre, Christopher; Silberman, Neil Asher (1996). The Oxford Companion to Archaeology (на језику: енглески). Oxford University Press. стр. 347. ISBN978-0-19-507618-9. Приступљено 2. 4. 2020.
Watkins 2000, "The Indo-Europeans knew snow in their homeland; the word sneigwh- is nearly ubiquitous.". Watkins, Calvert (2000), „Indo-European and the Indo-Europeans”, The American Heritage Dictionary of the English Language (на језику: енглески) (4 изд.), Houghton Mifflin Company, Архивирано из оригинала 1. 3. 2009. г.
Watkins 2000, "Yet, for the Indo-European-speaking society, we can reconstruct with certainty the word for “god,” *deiw-os, and the two-word name of the chief deity of the pantheon, *dyeu-pəter- (Latin Iūpiter, Greek Zeus patēr, Sanskrit Dyauṣ pitar, and Luvian Tatis Tiwaz).". Watkins, Calvert (2000), „Indo-European and the Indo-Europeans”, The American Heritage Dictionary of the English Language (на језику: енглески) (4 изд.), Houghton Mifflin Company, Архивирано из оригинала 1. 3. 2009. г.
Watkins 2000, "A large number of kinship terms have been reconstructed. They are agreed in pointing to a society that was patriarchal, patrilocal (the bride leaving her household to join that of her husband’s family), and patrilineal (descent reckoned by the male line). “Father” and “head of the household” are one: pǝter-, with his spouse, the māter-.". Watkins, Calvert (2000), „Indo-European and the Indo-Europeans”, The American Heritage Dictionary of the English Language (на језику: енглески) (4 изд.), Houghton Mifflin Company, Архивирано из оригинала 1. 3. 2009. г.
