(1976). Schriften zur Ingenieurökonomie. Dt. Consulting Verl.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
Tohutoru Kātū Chicago (17th ed.)
Schriften Zur Ingenieurökonomie. Wuppertal: Dt. Consulting Verl, 1976.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
Tohutoro MLA (9th ed.)
Schriften Zur Ingenieurökonomie. Dt. Consulting Verl, 1976.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
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