Rowland, J., & Cadman, B. C. (1960). Ambassador for oil: The life of John, first baron Cadman. H. Jenkins.
Lua i Stíl Chicago (17ú heag.)Rowland, John, agus Basil Cadman Cadman. Ambassador for Oil: The Life of John, First Baron Cadman. London: H. Jenkins, 1960.
Lua MLA (8ú heag.)Rowland, John, agus Basil Cadman Cadman. Ambassador for Oil: The Life of John, First Baron Cadman. H. Jenkins, 1960.
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