My professor said I did not cite my references the correct way and I do not know how too. References

My professor said I did not cite my references the correct way and I do not know how too.

References

Ahmed, J., Villata, S., & Governatori, G. (2019). Information and friend segregation for online social networks: a user study. Ai & Society, 34(4), 753-766.

Bernal, P. (2014). Internet privacy rights: rights to protect autonomy (No. 24). Cambridge University Press.

Haber, B. (2019). The digital ephemeral turn: queer theory, privacy, and the temporality of risk. Media, Culture & Society, 0163443719831600.

Langari, R. K., Sardar, S., Mousavi, S. A. A., & Radfar, R. (2020). Combined fuzzy clustering and firefly algorithm for privacy preserving in social networks. Expert Systems with Applications, 141, 112968.

Rubinstein, I. S., & Good, N. (2013). Privacy by design: A counterfactual analysis of Google and Facebook privacy incidents. Berkeley Tech. LJ, 28, 1333.

Stoycheff, E. (2016). Under surveillance: Examining Facebook’s spiral of silence effects in the wake of NSA Internet monitoring. Journalism & Mass Communication Quarterly, 93(2), 296-311.

Qiu, H., Qiu, M., & Lu, Z. (2020). Selective encryption on ECG data in body sensor network based on supervised machine learning. Information Fusion, 55, 59-67.