APA (7th ed.) Citation

Citrine, W. Letter (copy): Capture of Mr. McMahon and Mr. Boyd in Madrid.

Chicago Style (17th ed.) Citation

Citrine, Walter. Letter (copy): Capture of Mr. McMahon and Mr. Boyd in Madrid.

MLA (8th ed.) Citation

Citrine, Walter. Letter (copy): Capture of Mr. McMahon and Mr. Boyd in Madrid.

Warning: These citations may not always be 100% accurate.