APA

Buckley M., . (2001). Signs on the Way. Washington: National Geographic Society.

Chicago

Buckley Marvin, . 2001. Signs on the Way. Washington: National Geographic Society.

Harvard

Buckley M., . (2001). Signs on the Way. Washington: National Geographic Society.

MLA

Buckley Marvin, . Signs on the Way. Washington: National Geographic Society. 2001.