APA-viite

WELCH,Teresa J.C., P. E. a. W. (1972). FUNDAMENTALS OF THE TRACER METHOD. W.B.SAUNDERS COMPANY.

Chicago-tyylinen lähdeviittaus

WELCH,Teresa J.C., POTCHEN,James E. and WELCH,Michae. FUNDAMENTALS OF THE TRACER METHOD. PHILADELPHIA: W.B.SAUNDERS COMPANY, 1972.

MLA-viite

WELCH,Teresa J.C., POTCHEN,James E. and WELCH,Michae. FUNDAMENTALS OF THE TRACER METHOD. W.B.SAUNDERS COMPANY, 1972.