Cita APA (7th ed.)

Yell, J., & Wojnarowska, F. (1997). Bullous skin disease in lupus erythematosus.

Cita Chicago (17th ed.)

Yell, J., i F. Wojnarowska. Bullous Skin Disease in Lupus Erythematosus. 1997.

Cita MLA (9th ed.)

Yell, J., i F. Wojnarowska. Bullous Skin Disease in Lupus Erythematosus. 1997.

Atenció: Aquestes cites poden no estar 100% correctes.