Johnstone, D. (1994). Greens in the European Parliament: A new sense of purpose for Europe, record and prospects of the first Green Political Group in the European Parliament. The Parliament.
Chicago-referens (17:e uppl.)Johnstone, Diana. Greens in the European Parliament: A New Sense of Purpose for Europe, Record and Prospects of the First Green Political Group in the European Parliament. [Brussels, Begium]: The Parliament, 1994.
MLA-referens (8:e uppl.)Johnstone, Diana. Greens in the European Parliament: A New Sense of Purpose for Europe, Record and Prospects of the First Green Political Group in the European Parliament. The Parliament, 1994.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.