APA

Gray J. C., Gray R., . (1915). The rule against perpetuities. Boston: Little, Brown, and Company.

Chicago

Gray John Chipman, Gray Roland, . 1915. The rule against perpetuities. Boston: Little, Brown, and Company.

Harvard

Gray J. C., Gray R., . (1915). The rule against perpetuities. Boston: Little, Brown, and Company.

MLA

Gray John Chipman, Gray Roland, . The rule against perpetuities. Boston: Little, Brown, and Company. 1915.