APA (7th ed.) Citation

Great Britain Colonial Office, National Archives (Great Britain), Adam Matthew Digital, Vischer, H., & National Archives. (1933). Sierra Leone: : Visit of Mr. H. Vischer to Sierra Leone. Adam Matthew Digital.

Chicago Style (17th ed.) Citation

Great Britain Colonial Office, National Archives (Great Britain), Adam Matthew Digital, Hanns Vischer, and National Archives. Sierra Leone: : Visit of Mr. H. Vischer to Sierra Leone. Marlborough, England: Adam Matthew Digital, 1933.

MLA (8th ed.) Citation

Great Britain Colonial Office, et al. Sierra Leone: : Visit of Mr. H. Vischer to Sierra Leone. Adam Matthew Digital, 1933.