Cita APA (7th ed.)
Bertalanffy, L. v. (1968). General system theory: Fundations, development, applications. George Braziller.
Cita Chicago (17th ed.)
Bertalanffy, Ludwig von. General System Theory: Fundations, Development, Applications. Nueva York, EUA: George Braziller, 1968.
Cita MLA (9th ed.)
Bertalanffy, Ludwig von. General System Theory: Fundations, Development, Applications. George Braziller, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.