Shell Petroleum Company. (1954). Public relations in practice: The uses and limitations of the principal media. Shell Petroleum Co.
Цитирование в стиле Чикаго (17-е изд.)Shell Petroleum Company. Public Relations in Practice: The Uses and Limitations of the Principal Media. London: Shell Petroleum Co, 1954.
Цитирование MLA (9-е изд.)Shell Petroleum Company. Public Relations in Practice: The Uses and Limitations of the Principal Media. Shell Petroleum Co, 1954.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.