APA (7e ed.) Bronvermelding

Tower, D. B., & Tweed, B. F. (1855). Gradual lessons in grammar, or, Guide to the construction of the English language by the analysis and composition of sentences. Daniel Burgess & Co..

Chicago (17e ed.) Bronvermelding

Tower, David B., en Benjamin F. Tweed. Gradual Lessons in Grammar, or, Guide to the Construction of the English Language by the Analysis and Composition of Sentences. New York: Daniel Burgess & Co., 1855.

MLA (8e ed.) Bronvermelding

Tower, David B., en Benjamin F. Tweed. Gradual Lessons in Grammar, or, Guide to the Construction of the English Language by the Analysis and Composition of Sentences. Daniel Burgess & Co., 1855.