APA (7th ed.) Citation

Spain), F. (. :., & Citrine, W. Letter (copy): Labour Journals.

Chicago Style (17th ed.) Citation

Spain), F.A.I. (Organization :, and Walter Citrine. Letter (copy): Labour Journals.

MLA (8th ed.) Citation

Spain), F.A.I. (Organization :, and Walter Citrine. Letter (copy): Labour Journals.

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