Yes, I would say that he follows the same approach with verbatim quotations, hence listing myriads of references in footnotes. I am also an anorak with regard to including proper references and giving due credit to your sources, but in this case it may be too much for a ca. 200-pages bio. Both bios are very valuable assets, being the first full-length bios of Byas and Hodges, but both also have their lights and shadows.