It's Taken A While.

[AKFROG]

I'll list the books I have. "Horned Frogs Plus Budgett'sFrogs" by Philippe de Vosjoli.Copyright 2006, "Frogs and Toads" by Devin Edmonds. Copyright 2011.,"The Horned Frog Family and African Bullfrogs" by R.D. Bartlett & Patricia Bartlett. Copyright 2000., " Ceratophrys:Horned Frogs As Pets" by Taylor David. Copyright 2013 and "Horned Frogs by Ray Hunziker. Copyright 1994. I don't know if these are the only books on Horned Frogs or not.

[DesertHeat]

I wouldn't waste the time or money on the Taylor David book Carlos. It took me about 2 minutes to flip through on my kindle and has less information than the care sheet here on frog forum.