Kirk, Raven, and Schofield. pp. 59–60 no. 52; Ogden 2013b, pp. 36–38; Fontenrose, p. 72; Gantz, pp. 50–51, Ogden 2013a, p. 76 n. 46. Ogden 2013a, p. 150, n. 6, seems to conclude from the fact that the eggs were buried underground, that Earth (Gaia) was therefore considered to be the mother.
Plato (1925) [c. 360 BC]. Timaeus. Translated by Lamb, W.R.M. Cambridge, MA; London, UK: Harvard University Press; William Heinemann Ltd. 40e – via Perseus, Tufts University. See also Wikipedia article: Timaeus.
According to Hesiod, Theogony927–929, Hephaestus was produced by Hera alone, with no father, see Gantz, p. 74.
According to Hesiod, Theogony886–890, of Zeus's children by his seven wives, Athena was the first to be conceived, but the last to be born; Zeus impregnated Metis then swallowed her, later Zeus himself gave birth to Athena "from his head", see Gantz, pp. 51–52, 83–84.
According to Hesiod, Theogony183–200, Aphrodite was born from Uranus's severed genitals, see Gantz, pp. 99–100.