APA引文

Céspedes, I. F. (2019). Factors related to the feeling of loneliness during old age.

Citación estilo Chicago

Céspedes, Ivannia Fonseca. Factors Related to the Feeling of Loneliness During Old Age. 2019.

MLA引文

Céspedes, Ivannia Fonseca. Factors Related to the Feeling of Loneliness During Old Age. 2019.

警告：这些引文格式不一定是100％准确.