Cita APA (7th ed.)

Udall Brad, Hobbs Benjamin, Galloway Gerry, & Canal American Geophysical Union / Youtube. Natural resources 4, water management.

Cita Chicago (17th ed.)

Udall Brad, Hobbs Benjamin, Galloway Gerry, i Canal American Geophysical Union / Youtube. Natural Resources 4, Water Management.

Cita MLA (9th ed.)

Udall Brad, et al. Natural Resources 4, Water Management.

Atenció: Aquestes cites poden no estar 100% correctes.