APA-viite (7. p.)

Niknam, K., Mohagheghnejad, M., & Saberi, D. (2009). Silica Bonded S-Sulfonic Acid: A Recyclable Catalyst for the Synthesis of Quinoxalines at Room Temperature. MDPI AG.

Chicago-viite (17. p.)

Niknam, Khodabakhsh, Maleki Mohagheghnejad, ja Dariush Saberi. Silica Bonded S-Sulfonic Acid: A Recyclable Catalyst for the Synthesis of Quinoxalines at Room Temperature. MDPI AG, 2009.

MLA-viite (9. p.)

Niknam, Khodabakhsh, et al. Silica Bonded S-Sulfonic Acid: A Recyclable Catalyst for the Synthesis of Quinoxalines at Room Temperature. MDPI AG, 2009.