APA цитиране

Sileri, P., & Gaspari, A. (2012). Anal fissure: Symptoms, diagnosis and treatment. Hauppauge, N.Y.: Nova Science Publishers.

Чикагска система за цитиране

Sileri, Pierpaolo., и Achille Gaspari. Anal Fissure: Symptoms, Diagnosis and Treatment. Hauppauge, N.Y.: Nova Science Publishers, 2012.

MLA формат за цитиране

Sileri, Pierpaolo., и Achille Gaspari. Anal Fissure: Symptoms, Diagnosis and Treatment. Hauppauge, N.Y.: Nova Science Publishers, 2012.