Cita APA (7th ed.)

Healy, T. (1998). The world's most mysterious places. Reader's Digest Association.

Cita Chicago (17th ed.)

Healy, Tim. The World's Most Mysterious Places. London: Reader's Digest Association, 1998.

Cita MLA (9th ed.)

Healy, Tim. The World's Most Mysterious Places. Reader's Digest Association, 1998.