Citazione Stile APA (7a Edizione)

Twente, E. E. (1970). Never too old: The aged in community life. Jossey Bass.

Citazione stile Chigago Style (17a edizione)

Twente, Esther E. Never Too Old: The Aged in Community Life. San francisco: Jossey Bass, 1970.

Citatione MLA (9a ed.)

Twente, Esther E. Never Too Old: The Aged in Community Life. Jossey Bass, 1970.