APA (7th ed.) Citation

Holroyd, J. E. (1967). Seventeen steps to 221B: A collection of Sherlockian pieces by English writers. Allen & Unwin.

Chicago Style (17th ed.) Citation

Holroyd, James Edward. Seventeen Steps to 221B: A Collection of Sherlockian Pieces by English Writers. London: Allen & Unwin, 1967.

MLA (8th ed.) Citation

Holroyd, James Edward. Seventeen Steps to 221B: A Collection of Sherlockian Pieces by English Writers. Allen & Unwin, 1967.