APA引文

Rubio, R. M. (2019). A senior citizen establishes a farm at the age of 80. Agriculture.

Chicago Style (17th ed.) Citation

Rubio, Rex M. "A Senior Citizen Establishes a Farm at the Age of 80." Agriculture 2019.

MLA引文

Rubio, Rex M. "A Senior Citizen Establishes a Farm at the Age of 80." Agriculture, 2019.