APA (7th ed.) Citation

Sievers, T., & Hölzel, C. S. A riddle on norA, norB, and norC. American Society for Microbiology.

Chicago Style (17th ed.) Citation

Sievers, Theresa, and Christina Susanne Hölzel. A Riddle on NorA, NorB, and NorC. American Society for Microbiology.

MLA (9th ed.) Citation

Sievers, Theresa, and Christina Susanne Hölzel. A Riddle on NorA, NorB, and NorC. American Society for Microbiology.

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