Sugitani, Kenichiro; et al. (2009). "Taxonomy and biogenicity of Archaean spheroidal microfossils (ca. 3.0 Ga) from the Mount Goldsworthy–Mount Grant area in the northeastern Pilbara Craton, Western Australia". Precambrian Research. 173 (1–4): 50–59. Bibcode:2009PreR..173...50S. doi:10.1016/j.precamres.2009.02.004.
Sugitani, Kenichiro; et al. (2009). "Taxonomy and biogenicity of Archaean spheroidal microfossils (ca. 3.0 Ga) from the Mount Goldsworthy–Mount Grant area in the northeastern Pilbara Craton, Western Australia". Precambrian Research. 173 (1–4): 50–59. Bibcode:2009PreR..173...50S. doi:10.1016/j.precamres.2009.02.004.