olemus
ISO 4:
vähim tähenduslik keeleüksus

ülevaateid
http://www.unizd.hr/portals/36/kolegiji/morphology/morphology%203.pdf

http://www.mathcs.duq.edu/~packer/Courses/Psy598/Ling-Morphology.pdf

https://en.wikipedia.org/wiki/Morpheme

https://en.wikipedia.org/wiki/Bound_and_free_morphemes

https://en.wikipedia.org/wiki/Content_morpheme

https://en.wikipedia.org/wiki/Allomorph

https://en.wikipedia.org/wiki/Cranberry_morpheme

http://repository.ut.ac.id/4243/1/BING4316-M1.pdf

https://studfile.net/preview/5200797/

https://www.scribd.com/document/257277798/List-of-English-Morphemes