Da Rulez, article 101.6.3, section B, part (2):
101.6 Individual Medley101.6.3 Turns
B The turns when changing from one stroke to another shall conform to the finish rules for the stroke just completed, and shall be as follows:
(2) Backstroke to breaststroke—The swimmer must touch the wall while on the back. Once a legal touch has been made, the swimmer may turn in any manner, but the shoulders must be at or past the vertical toward the *** when the swimmer leaves the wall and the prescribed breaststroke form must be attained prior to the first arm stroke.
Da Rulez, article 101.6.3, section B, part (2):
101.6 Individual Medley101.6.3 Turns
B The turns when changing from one stroke to another shall conform to the finish rules for the stroke just completed, and shall be as follows:
(2) Backstroke to breaststroke—The swimmer must touch the wall while on the back. Once a legal touch has been made, the swimmer may turn in any manner, but the shoulders must be at or past the vertical toward the *** when the swimmer leaves the wall and the prescribed breaststroke form must be attained prior to the first arm stroke.