Gaya APA

Materials, A, S, F, T, &. (1998). 1998 Annual Book Of ASTM Standards Section 5 Volume 05.05: Gaseous Fuels; Coal and Coke . United States of America: American Society for Testing & Materials.

Gaya MLA

Materials, American, Society, For, Testing, &. "1998 Annual Book Of ASTM Standards Section 5 Volume 05.05: Gaseous Fuels; Coal and Coke". United States of America: American Society for Testing & Materials, 1998. Text.