APA (7th ed.) Citation

Standardization of Tar Products Tests Committee, London, & Watkins, P. V. (1968). Standard methods for testing tar and its products (6th ed.). Standardization of Tar Products Tests Committee.

Chicago Style (17th ed.) Citation

Standardization of Tar Products Tests Committee, London, and P. V. Watkins. Standard Methods for Testing Tar and Its Products. 6th ed. Cleckheaton (Yorks.): Standardization of Tar Products Tests Committee, 1968.

MLA (9th ed.) Citation

Standardization of Tar Products Tests Committee, London, and P. V. Watkins. Standard Methods for Testing Tar and Its Products. 6th ed. Standardization of Tar Products Tests Committee, 1968.