Citable reference for "amphichiral knot" being equivalently definable with "self-homeomorphism" or "self-diffeomorphism"?

Question

Question. Is there a precise citable reference explicitly saying that in defining "amphirical knot" it is equivalent

to either say

"orientation-reversing self-homeomorphism of the 3-sphere"

or

"orientation-reversing self-diffeomorphisms of the 3-sphere"?