APA (7th ed.) Citation

Guo, X., Marinova, D., & unknown. (2006). Population Ageing and Sustainability in China: Comparisons with Australia. ACESA.

Chicago Style (17th ed.) Citation

Guo, Xiumei, Dora Marinova, and unknown. Population Ageing and Sustainability in China: Comparisons with Australia. ACESA, 2006.

MLA (9th ed.) Citation

Guo, Xiumei, et al. Population Ageing and Sustainability in China: Comparisons with Australia. ACESA, 2006.