APA

United States, . (1969). Working with older people: a guide to practice. Arlington, Va: [For sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington].

Chicago

United States, . 1969. Working with older people: a guide to practice. Arlington, Va: [For sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington].

Harvard

United States, . (1969). Working with older people: a guide to practice. Arlington, Va: [For sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington].

MLA

United States, . Working with older people: a guide to practice. Arlington, Va: [For sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington]. 1969.