APA (7 वां संस्करण) प्रशस्ति पत्र

Johnson, P. (1994). Twentieth-Century Britain: Economic, social and cultural change (1a. ed.). Longman.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Johnson, Paul. Twentieth-Century Britain: Economic, Social and Cultural Change. 1a. ed. Londres: Longman, 1994.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Johnson, Paul. Twentieth-Century Britain: Economic, Social and Cultural Change. 1a. ed. Longman, 1994.