D. W. Langridge

发表

Indexing for ERIC; A Programmed Course. Volume 1, Preface and Appendices.

D. W. Langridge, 1967 .

Indexing for ERIC. Volume 3, Lessons 3 and 4.

D. W. Langridge, 1967 .

Classification and indexing in the humanities

D. W. Langridge, 1976 .