APA (7th ed.) Citation

Shell Petroleum Company. (1954). Public relations in practice: The uses and limitations of the principal media. Shell Petroleum Co.

Chicago Style (17th ed.) Citation

Shell Petroleum Company. Public Relations in Practice: The Uses and Limitations of the Principal Media. London: Shell Petroleum Co, 1954.

MLA (9th ed.) Citation

Shell Petroleum Company. Public Relations in Practice: The Uses and Limitations of the Principal Media. Shell Petroleum Co, 1954.