Elliott, Charles Burke. The law of insurance: a treatise on the law of insurance, including fire, life, accident, marine, casualty, title, credit and guarantee insurance in every form (англ.). — Bobbs-Merrill[англ.], 1907. — P. 3.
Shane Darrisaw, H. Common Sense Ain't Common: A guide for positioning yourself to take full advantage of your credit and financial opportunities! (англ.). — AuthorHouse[англ.]. — P. 86. — ISBN 1-4343-7559-5.
Elliott, Charles Burke. The law of insurance: a treatise on the law of insurance, including fire, life, accident, marine, casualty, title, credit and guarantee insurance in every form (англ.). — Bobbs-Merrill[англ.], 1907. — P. 3.