[…] whereas almost any degree of loudness (within limits) occurs in English utterances, we have only certain sequences of tone changes, such that most utterances occur with one or another of these particular sequences (intonations).
- Harris (1951), a pag.46

[…] almost all utterances, intonations, etc. stop not in the middle but at the end of a morpheme.
- Harris (1951), a pag.88

In some cases several contours, e.g. stress and intonation and vowel harmony, may together be automatic in respect to the same juncture.
- Harris (1951), a pag.96, n.15

In the consideration of morpheme sequences it is necessary to include all suprasegmental morphemes such as intonation and stress contour.
- Harris (1951), a pag.281