Once more must the methods of modern language instruction be revised.
APA Citation
Guthrie, K. Sylvan. (1912). Once more must the methods of modern language instruction be revised. Brooklyn: Comparative literature press; [etc., etc.].
MLA Citation
Guthrie, Kenneth Sylvan, 1871-1940. Once More Must the Methods of Modern Language Instruction Be Revised. Brooklyn: Comparative literature press; [etc., etc.], 1912.
Warning: These citations may not always be complete (especially for serials).