Cita APA

Maruyama, A., & Yamamoto, K. (2011). Variety expansion and fertility rates. Tokyo, Japan: Nihon University, Population Research Institute.

Citación estilo Chicago

Maruyama, Akiko, y Kazuhiro Yamamoto. Variety Expansion and Fertility Rates. Tokyo, Japan: Nihon University, Population Research Institute, 2011.

Cita MLA

Maruyama, Akiko, y Kazuhiro Yamamoto. Variety Expansion and Fertility Rates. Tokyo, Japan: Nihon University, Population Research Institute, 2011.