The Chaucer Review: An Indexed Bibliography (Vols. 1-30)

Correale, Robert M. "Chaucer's Manuscript of Nicholas Trevet's Les Cronicles." 25 (1991): 238-65.
Scrutiny of the two families of texts of Trevet's Cronicles can indicate which text Chaucer used for the Man of Law's Tale and can show what changes he made to his source. The passages borrowed directly from the source reveal that Chaucer used a text belonging to Family A. Other elements seem to have come from the B texts. But, once all the references and changes are collected, the text Chaucer used seems to be most similar to the Paris text, produced for a noble family.

Nicholson, Peter. "The Man of Law's Tale: What Chaucer Really Owed to Gower." 26 (1991): 153-74.
Chaucer's debt to Gower for the material in the Man of Law's Tale has never been adequately assessed. Chaucer and Gower eliminate the same details and follow the same plot line. Chaucer also borrows a number of words and phrases from Gower. Chaucer chooses to borrow from Gower's treatments of several key scenes instead of taking directly from Trevet. Gower was probably more Chaucer's source for the Man of Law's Tale than Trevet's Cronicles.