Cita APA (7th ed.)
Jones, L. (1977). Home Hydroponics... and How to Do it! Ward Ritchie.
Cita Chicago (17th ed.)
Jones, Lem. Home Hydroponics... and How to Do It! Nueva York, EUA: Ward Ritchie, 1977.
Cita MLA (9th ed.)
Jones, Lem. Home Hydroponics... and How to Do It! Ward Ritchie, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.