Cita APA (7a ed.)

(1973). Gastrointestinal tract disease syllabus. s.n.

Cita Chicago Style (17a ed.)

Gastrointestinal Tract Disease Syllabus. Chicago: s.n, 1973.

Cita MLA (9a ed.)

Gastrointestinal Tract Disease Syllabus. s.n, 1973.