Cita APA (7th ed.)

Boys, C. V. (1959). Sopa bubbles and the forces which mould them. Doubleday Anchor Books.

Cita Chicago (17th ed.)

Boys, Charles Vernon. Sopa Bubbles and the Forces Which Mould Them. Nueva York: Doubleday Anchor Books, 1959.

Cita MLA (9th ed.)

Boys, Charles Vernon. Sopa Bubbles and the Forces Which Mould Them. Doubleday Anchor Books, 1959.