Gaya APA

Ritchie, J., Alfard, N, H. (1971). Cases and materials on decendents estates and trusts (ke 4). Mineola: The foundation press.

Gaya MLA

Ritchie, John., Alfard, Neil, H.. "Cases and materials on decendents estates and trusts". ke 4 Mineola: The foundation press, 1971. .