Cita APA (7a ed.)

Hunt, D., & Johnson, C. (1995). Environmental management systems: Principles and practice. McGraw-Hill.

Cita Chicago Style (17a ed.)

Hunt, David, y Catherine Johnson. Environmental Management Systems: Principles and Practice. London [etc.]: McGraw-Hill, 1995.

Cita MLA (9a ed.)

Hunt, David, y Catherine Johnson. Environmental Management Systems: Principles and Practice. McGraw-Hill, 1995.