New Revised Standard Version
Believe me that I am in the Father and the Father is in me; but if you do not, then believe me because of the works themselves.

Contemporary English Version
Have faith in me when I say that the Father is one with me and that I am one with the Father. Or else have faith in me simply because of the things I do.

New American Bible
Believe me that I am in the Father and the Father is in me, or else, believe because of the works themselves.

Douay-Rheims Bible
Believe you not that I am in the Father and the Father in me?

Believe you not that I am in the Father and the Father in me?

or.

John 5:36 But I have a greater testimony than that of John: for the works which the Father hath given me to perfect, the works themselves which I do, give testimony of me, that the Father hath sent me.

John 10:25,32,38 Jesus answered them: I speak to you, and you believe not: the works that I do in the name of my Father, they give testimony of me. . . .

John 12:38-40 That the saying of Isaias the prophet might be fulfilled, which he said: Lord, who hath believed our hearing? And to whom hath the arm of the Lord been revealed? . . .

Matthew 11:4,5 And Jesus making answer said to them: Go and relate to John what you have heard and seen. . . .

Luke 7:21-23 (And in that same hour, he cured many of their diseases and hurts and evil spirits: and to many that were blind he gave sight.) . . .

Acts 2:22 Ye men of Israel, hear these words: Jesus of Nazareth, a man approved of God among you by miracles and wonders and signs, which God did by him, in the midst of you, as you also know:

Hebrews 2:4 God also bearing them witness by signs and wonders and divers miracles and distributions of the Holy Ghost, according to his own will.