I learned this from Professor Robert Malcolmson at Queen's University (Kingston, Ont) around 1981. He taught a senior seminar on English social history based largely on the works of JH Plumb, Asa Briggs, EP Thompson et al -- he was himself a student of Thompson -- and began a series of classes on the transition from commons to private land with this little verse.

I have also seen it quoted in literally dozens of scholarly papers and monographs on the subject, beginning with the magisterial two-volume history of British agriculture by Joan Thirsk.