APA (7th ed.) Citation

Carlyle, T., & Carlyle, A. (1923). Letters of Thomas Carlyle to John Stuart Mill, John Sterling and Robert Browning. Fisher Unwin.

Chicago Style (17th ed.) Citation

Carlyle, Thomas, and Alexander Carlyle. Letters of Thomas Carlyle to John Stuart Mill, John Sterling and Robert Browning. London: Fisher Unwin, 1923.

MLA (9th ed.) Citation

Carlyle, Thomas, and Alexander Carlyle. Letters of Thomas Carlyle to John Stuart Mill, John Sterling and Robert Browning. Fisher Unwin, 1923.