APA引文

Tardé, R. (1990). Toward sustainable agriculture in Central America: A research agenda.

Citación estilo Chicago

Tardé, R. Toward Sustainable Agriculture in Central America: A Research Agenda. 1990.

MLA引文

Tardé, R. Toward Sustainable Agriculture in Central America: A Research Agenda. 1990.

警告：這些引文格式不一定是100％准確.