APA (7th ed.) Citation

(1942). Public roads, a journal of Highway Research, Index to Vol. 23, Mar. 1942-June 1944. [s.n.].

Chicago Style (17th ed.) Citation

Public Roads, a Journal of Highway Research, Index to Vol. 23, Mar. 1942-June 1944. [Washington]: [s.n.], 1942.

MLA (9th ed.) Citation

Public Roads, a Journal of Highway Research, Index to Vol. 23, Mar. 1942-June 1944. [s.n.], 1942.