APA引文

American Library Association. Science and Technology Reference Services Committee. (1969). A guide to a selection of computer-based science and technology reference services in the U.S.A.

Chicago Style (17th ed.) Citation

American Library Association. Science and Technology Reference Services Committee. A Guide to a Selection of Computer-based Science and Technology Reference Services in the U.S.A. Chicago, 1969.

MLA引文

American Library Association. Science and Technology Reference Services Committee. A Guide to a Selection of Computer-based Science and Technology Reference Services in the U.S.A. 1969.