APA Style

1974, A, S, F, T, A, M. (1974). Evolution of the International Practical Temperature Scale of 1968 . Philadelphia: American Society for Testing and Materials.

MLA Style

1974, AMERICAN, SOCIETY, FOR, TESTING, AND, MATERIALS. "Evolution of the International Practical Temperature Scale of 1968". Philadelphia: American Society for Testing and Materials, 1974. Text.