APA Edition Citation

Martens, H. R. (1969). Introduction to systems theory. Charles E Merrill.

Chicago Edition Citation

Martens, Hinrich R. Introduction to Systems Theory. U S A: Charles E Merrill, 1969.

MLA Edition Citation

Martens, Hinrich R. Introduction to Systems Theory. Charles E Merrill, 1969.

Warning: These citations may not always be 100% accurate.