Cita APA (7th ed.)
ebrary, Inc, Sileri, P., & Gaspari, A. (2012). Anal fissure: Symptoms, diagnosis and treatment. Nova Science Publishers.
Cita Chicago (17th ed.)
ebrary, Inc, Pierpaolo Sileri, i Achille Gaspari. Anal Fissure: Symptoms, Diagnosis and Treatment. Hauppauge, N.Y.: Nova Science Publishers, 2012.
Cita MLA (9th ed.)
ebrary, Inc, et al. Anal Fissure: Symptoms, Diagnosis and Treatment. Nova Science Publishers, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.