Cita APA (7a ed.)

Ng, O. T., Koh, V., Chiew, C. J., Marimuthu, K., Thevasagayam, N. M., Mak, T. M., . . . Lee, P. V. J. (2021). Title: Impact of Delta Variant and Vaccination on SARS-CoV-2 Secondary Attack Rate Among Household Close Contacts. Elsevier.

Cita Chicago Style (17a ed.)

Ng, Oon Tek, et al. Title: Impact of Delta Variant and Vaccination on SARS-CoV-2 Secondary Attack Rate Among Household Close Contacts. Elsevier, 2021.

Cita MLA (8a ed.)

Ng, Oon Tek, et al. Title: Impact of Delta Variant and Vaccination on SARS-CoV-2 Secondary Attack Rate Among Household Close Contacts. Elsevier, 2021.