If no such referendary petition is presented within the aforesaid period of 60 days, then upon the expiration of said period, or if the proposition of issuing the bonds specified in the resolution of the board adopted pursuant to this article has been assented to by the voters, whether upon referendum or pursuant to any other provisions of this chapter, then upon such proposition having been so assented to, the resolution shall take full and final effect, and the board may proceed in accordance with the provisions of this chapter and issue bonds within the terms of the resolution.