Παραπομπή σε μορφή APA (7η εκδ.)

Hofstetter, P. (1998). Prespectives in life cycle impact assessment: A structured approach to combine models of the technosphere, ecosphere and valuesphere. Kluwer Academic Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hofstetter, Patrick. Prespectives in Life Cycle Impact Assessment: A Structured Approach to Combine Models of the Technosphere, Ecosphere and Valuesphere. Boston: Kluwer Academic Publishers, 1998.

Παραπομπή σε μορφή MLA (8th εκδ.)

Hofstetter, Patrick. Prespectives in Life Cycle Impact Assessment: A Structured Approach to Combine Models of the Technosphere, Ecosphere and Valuesphere. Kluwer Academic Publishers, 1998.