Umberto Eco wrote a little (229p) volume titled How to Write a Thesis in 1977. In the introduction to the revised 1985 edition, Eco describes the book as one that "focuses on the spirit, mentality, and research methods required to write a good thesis, rather than on its content".

It's a bit longer than Ashby's paper, and some of the internet age may look disdainfully on his advice for index cards, paper notes, and photocopies, but the intent behind them and the general method translates easily to the digital age, and thankfully we have tools like Zotero to drastically reduce some of the busywork.