Cita APA

Felix Pirani & Christine Roche. (1997). The universe for beginners. Harper Collins.

Citación estilo Chicago

Felix Pirani and Christine Roche. The Universe for Beginners. London: Harper Collins, 1997.

Cita MLA

Felix Pirani and Christine Roche. The Universe for Beginners. Harper Collins, 1997.

Warning: These citations may not always be 100% accurate.