flipflop - Building a T flip-flop with enable and reset using only a JK flip -flop that has no enable or reset, and use some necessary logic gates - Electrical Engineering Stack Exchange
Gated SR Latch or Clocked SR Flip Flops: Truth Table & Explanation | Electrical4U
Sequential Logic Circuits and the SR Flip-flop
Conversion of Flip-flops from one flip-flop to Another