APA (7th ed.) Citation

Gugger, H. (2018). Portugal lessons: Environmental objects. Park Books.

Chicago Style (17th ed.) Citation

Gugger, Harry. Portugal Lessons: Environmental Objects. Zurich: Park Books, 2018.

MLA (9th ed.) Citation

Gugger, Harry. Portugal Lessons: Environmental Objects. Park Books, 2018.

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