Cita APA (7th ed.)
David M. Harland. Water and the Search for Life on Mars. Praxis Publishing.
Cita Chicago (17th ed.)
David M. Harland. Water and the Search for Life on Mars. Nueva York, EUA: Praxis Publishing.
Cita MLA (9th ed.)
David M. Harland. Water and the Search for Life on Mars. Praxis Publishing.
Atenció: Aquestes cites poden no estar 100% correctes.