APA Citation

Hall, H., & Knight, S. (1955). Elementary trigonometry (4th rev.&enl.ed.). London: Macmillan.

Chicago Style Citation

Hall, H.S., and S.R Knight. Elementary Trigonometry. 4th rev.&enl.ed. London: Macmillan, 1955.

MLA Citation

Hall, H.S., and S.R Knight. Elementary Trigonometry. 4th rev.&enl.ed. London: Macmillan, 1955.

Warning: These citations may not always be 100% accurate.