The principles of the law of contract
by A. J. Kerr1980 年出版531 页ISBN：0409037443
THE BIRTH OF THE ENGLISH COMMON LAW
R.C.VAN CAENEGEM1988 年出版160 页ISBN：0521356822
A SOCIETY OF GENTLEMEN MIDSHIPMEN AT THE U.S.NAVAL ACADEMY 1845-1861
MARK C.HUNTER2010 年出版233 页ISBN：1591143970
THE NATURE AND SOURCES OF THE LAW
JOHN CHIPMAN GRAY SECOND EDITION1924 年出版348 页ISBN：
edited by F.J.M. Feldbrugge2003 年出版289 页ISBN：978900413705x
