NASA transcripts had attributed the response to Aldrin (Apollo 11 Technical Air-to-Ground Voice Transcription. National Aeronautics and Space Administration. Page 179), but corrected NASA transcripts attribute it to Collins.[14]
history.nasa.gov
Woods, W. David; MacTaggart, Kenneth D.; O'Brien, Frank. "Day 5: Preparations for Landing". The Apollo 11 Flight Journal. National Aeronautics and Space Administration. Retrieved 9 October 2017