Cita APA

Heinemann, M., & Labour Research Department. (1948). Coal must come first. F. Muller.

Citación estilo Chicago

Heinemann, Margot, y Labour Research Department. Coal Must Come First. London: F. Muller, 1948.

Cita MLA

Heinemann, Margot, y Labour Research Department. Coal Must Come First. F. Muller, 1948.