That's pretty clear, IMO. And what happens when you don't get further ATC instructions prior to reaching the end of the missed approach procedure? - you hold! Either as published on the racetrack depicted on the plate, inbound on the published track, or inbound on the track on which you arrived at the missed approach holding point. - TC AIM RAC section.
Most FAA IAPs have a charted missed approach holding pattern unlike many countries.
Then again, at major airports ATC will more often than not provide radar vectors when the pilot declares a missed approach.