APA引文

KREBS, R. D., & WALKER, R. D. (1971). Highway materials. McGraw-Hill.

Chicago Style (17th ed.) Citation

KREBS, Robert D., and Richard D. WALKER. Highway Materials. New York: McGraw-Hill, 1971.

MLA引文

KREBS, Robert D., and Richard D. WALKER. Highway Materials. McGraw-Hill, 1971.

警告：這些引文格式不一定是100％准確.