Ravilious & Co : : The Pattern of Friendship.

MLA

Friend, Andy, and Alan Powers. Ravilious & Co : The Pattern of Friendship. London: Thames & Hudson, 2017.

APA

Friend, A., & Powers, A. (2017). Ravilious & Co : The Pattern of Friendship. London: Thames & Hudson.

Chicago

Friend, Andy, and Alan Powers. Ravilious & Co: The Pattern of Friendship. London: Thames & Hudson, 2017.