APA

Howarth O., . (1931). The British association for the advancement of science. London: .

Chicago

Howarth O.J.R, . 1931. The British association for the advancement of science. London: .

Harvard

Howarth O., . (1931). The British association for the advancement of science. London: .

MLA

Howarth O.J.R, . The British association for the advancement of science. London: . 1931.