Alliteration is demonstrated as a figure of speech which includes repetition of identical consonant sounds in a line of a poem or phrase. Such a device is employed by the poets more often to create a specific effect like rhythm or mood or to emphasize a particular point by capturing the readers' attention.
In the given excerpt, the words "cold, curt, cuts" illustrate this literary device(alliteration) which repeats the consonant sound 'c' and adding a special rhythmic effect to the poem.
This is True. If you are referring to an author about whom you had previously written in the paragraph, you are allowed to omit the name from the parentheses.