APA (7th ed.) Citation

Zyl, G. U. v., Maponga, T., Rabie, H., & Taljaard, J. The role of new hepatitis B vaccines in South Africa. South African Medical Association.

Chicago Style (17th ed.) Citation

Zyl, G U van, T. Maponga, H. Rabie, and J. Taljaard. The Role of New Hepatitis B Vaccines in South Africa. South African Medical Association.

MLA (9th ed.) Citation

Zyl, G U van, et al. The Role of New Hepatitis B Vaccines in South Africa. South African Medical Association.

Warning: These citations may not always be 100% accurate.