Cita APA (7th ed.)

MENCHIRS ROBERT S. (1991). MATURE MARKET: A GOLD MINE OF IDEAS FOR TAPPING THE 50+. PROBUS PUBLICATIONS.

Cita Chicago (17th ed.)

MENCHIRS ROBERT S. MATURE MARKET: A GOLD MINE OF IDEAS FOR TAPPING THE 50+. CHICAGO: PROBUS PUBLICATIONS, 1991.

Cita MLA (9th ed.)

MENCHIRS ROBERT S. MATURE MARKET: A GOLD MINE OF IDEAS FOR TAPPING THE 50+. PROBUS PUBLICATIONS, 1991.