| 其他書名 | The Brief Story of the Business Endeavours of Robert Gregory, His Three Sons Robert, Arthur and Arnold, and His Grandson Robert Henry, During the Seventy Years - 1875 Until the End of World War II in 1945 |
| 出版 | Robert Gregory and Company, 1945 |
| URL | http://books.google.com.hk/books?id=zAHIvQEACAAJ&hl=&source=gbs_api |