एपीए उद्धरण

Gray, S. (2020). Steam Power and Sea Power. 1st ed. 2018. Palgrave Macmillan UK.

शिकागो स्टाइल उद्धरण

Gray, Steven. Steam Power and Sea Power. 1st Ed. 2018. Palgrave Macmillan UK, 2020.

एमएलए उद्धरण

Gray, Steven. Steam Power and Sea Power. 1st Ed. 2018. Palgrave Macmillan UK, 2020.