APA
Baird S. M., Richard Coulson, Myra Rufo, Rodney B. Murry, Concetta Harakal & Alvar Gustafson. (1998). USMLE Step 1 The Organ Systems Volume Three: Gastrointestinal, Endocrine, and Reproductive systems. USA: Kaplan Educational Centers.
Chicago
Baird Stephen M, Richard Coulson, Myra Rufo, Rodney B. Murry, Concetta Harakal and Alvar Gustafson. 1998. USMLE Step 1 The Organ Systems Volume Three: Gastrointestinal, Endocrine, and Reproductive systems. USA: Kaplan Educational Centers.
Harvard
Baird S. M., Richard Coulson, Myra Rufo, Rodney B. Murry, Concetta Harakal and Alvar Gustafson. (1998). USMLE Step 1 The Organ Systems Volume Three: Gastrointestinal, Endocrine, and Reproductive systems. USA: Kaplan Educational Centers.
MLA
Baird Stephen M, Richard Coulson, Myra Rufo, Rodney B. Murry, Concetta Harakal and Alvar Gustafson. USMLE Step 1 The Organ Systems Volume Three: Gastrointestinal, Endocrine, and Reproductive systems. USA: Kaplan Educational Centers. 1998.