MLA

Osbourne, Lloyd, 1868-1947, Stevenson, Robert Louis, 1850-1894. The ebb-tide : a trio and quartette / by Robert Louis Stevenson and Lloyd Osbourne. 1894. https://collections.library.yale.edu/catalog/10566832.

APA, 6th edition

Osbourne, Lloyd, 1868-1947, & Stevenson, Robert Louis, 1850-1894. (1894)[The ebb-tide : a trio and quartette / by Robert Louis Stevenson and Lloyd Osbourne]. https://collections.library.yale.edu/catalog/10566832.