Lewis, S. L., Dirksen, S. R.,Heitkemper, M. M., Bucher, L., & Camera, I. M. (2011). Meical-surgical nursing: Assessment and management of clinical problems(8th ed.). St. Louis, MO: Elsevier Mosby.
Here's the full citation for the textbook and, as stated in my OP, the quotation referenced was on page 601-602. Clearly, the long-standing recommendations for inhaler administration order aren't going anywhere anytime soon; I just thought it was an interesting tidbit to add to the discussion.