This one mounts to the front, but I've heard excellent reviews on it.
https://www.amazon.com/iBert-Safe-T-Front-Mounted-Bicycle/dp/B000H4E7EO
Re: Child carrier (bike seat) for bike
This one mounts to the front, but I've heard excellent reviews on it.
https://www.amazon.com/iBert-Safe-T-Front-Mounted-Bicycle/dp/B000H4E7EO