APA引文

Gómez, V. (2013). Birthspacing and fertility decline in Costa Rica.

Citación estilo Chicago

Gómez, Víctor. Birthspacing and Fertility Decline in Costa Rica. 2013.

MLA引文

Gómez, Víctor. Birthspacing and Fertility Decline in Costa Rica. 2013.

警告：這些引文格式不一定是100％准確.