Cita APA

Bray, R., & Loughhead, R. (1964). Sunspots. Chapman & Hall.

Chicago Edition Citation

Bray, R.J, i R.E Loughhead. Sunspots. London: Chapman & Hall, 1964.

Cita MLA

Bray, R.J, i R.E Loughhead. Sunspots. Chapman & Hall, 1964.