Gray, S. (2020). Steam Power and Sea Power. 1st ed. 2018. Palgrave Macmillan UK.
Dyfyniad Arddull ChicagoGray, Steven. Steam Power and Sea Power. 1st Ed. 2018. Palgrave Macmillan UK, 2020.
Dyfyniad MLAGray, Steven. Steam Power and Sea Power. 1st Ed. 2018. Palgrave Macmillan UK, 2020.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.