APA引文

(1982). Productivity measures for selected industries, 1954-81. Washington: Superintendent.

Trích dẫn kiểu Chicago

Productivity Measures for Selected Industries, 1954-81. Washington: Superintendent, 1982.

MLA引文

Productivity Measures for Selected Industries, 1954-81. Washington: Superintendent, 1982.

警告：這些引文格式不一定是100％准確.