Gaya APA

Siregar, B. et al (2021). Nutraceuticals: Efficacy, Safety, And Toxicity (2nd Ed.). London: Elsevier.

Gaya MLA

Siregar, Bismar. et al. "Nutraceuticals: Efficacy, Safety, And Toxicity". 2nd Ed. London: Elsevier, 2021. Text.