APA

Grant R. G., . (2018). World War I. London: Draling Kindersley.

Chicago

Grant R G, . 2018. World War I. London: Draling Kindersley.

Harvard

Grant R. G., . (2018). World War I. London: Draling Kindersley.

MLA

Grant R G, . World War I. London: Draling Kindersley. 2018.