Cita APA (7th ed.)
A Practical Recycling Handbook. Thomas Telford : The Kindred Association.
Cita Chicago (17th ed.)
A Practical Recycling Handbook. Londres, Inglaterra: Thomas Telford : The Kindred Association.
Cita MLA (9th ed.)
A Practical Recycling Handbook. Thomas Telford : The Kindred Association.
Atenció: Aquestes cites poden no estar 100% correctes.