Cita APA (7a ed.)

Helvie, C. O. (1999). Homelessness in the United States, Europe, and Russia: A comparative perspective (1. publ.). Bergin & Garvey.

Cita Chicago Style (17a ed.)

Helvie, Carl O. Homelessness in the United States, Europe, and Russia: A Comparative Perspective. 1. publ. Westport, Conn. [u.a.]: Bergin & Garvey, 1999.

Cita MLA (9a ed.)

Helvie, Carl O. Homelessness in the United States, Europe, and Russia: A Comparative Perspective. 1. publ. Bergin & Garvey, 1999.