This isn't literature, but from Melbourne Zoo's Don't Palm Us Off campaign, a campaign in favour of mandatory labelling of palm oil in Australia and New Zealand, their argument goes:

"Mandatory labelling of palm oil will help put pressure on food companies to start using sustainably-produced palm oil." [0]

There seems to be disagreement about what sustainable palm oil entails or how sustainable it actually is [1], so would be good to see this claim backed up with research.

[0] https://www.zoo.org.au/get-involved/act-for-wildlife/dont-pa... [1] https://www.theguardian.com/environment/2018/jul/10/nestle-p...