Cita APA (7th ed.)

Linkletter, A. (1988). Old age is not for sissies: Choices for senior Americans. Penguin Books.

Cita Chicago (17th ed.)

Linkletter, Art. Old Age Is Not for Sissies: Choices for Senior Americans. New York, NY, USA: Penguin Books, 1988.

Cita MLA (9th ed.)

Linkletter, Art. Old Age Is Not for Sissies: Choices for Senior Americans. Penguin Books, 1988.