OPEN UNIVERSITY. (1980). CASE STUDY STANDARD TELEPHONES AND CABLES. OPEN UNIVERSITY PRESS.
芝加哥风格引文OPEN UNIVERSITY. CASE STUDY STANDARD TELEPHONES AND CABLES. MILTON KEYNES: OPEN UNIVERSITY PRESS, 1980.
MLA引文OPEN UNIVERSITY. CASE STUDY STANDARD TELEPHONES AND CABLES. OPEN UNIVERSITY PRESS, 1980.
警告：这些引文格式不一定是100％准确.