The full text of the research the article mentions is here: https://www.researchgate.net/publication/233885402_'Unnatural'_'Unwomanly'_'Uncreditable'_and_'Undervalued'_The_Significance_of_Being_a_Childless_Woman_in_Australian_Society
As a childless person I've been thinking a lot lately about how not being a mother is perceived. I really enjoyed seeing it from this academic perspective, and thought some here might likewise.