APA (7th ed.) Citation

Helder, H. (2015). Photomaton & vox (6a ed.). Porto Editora.

Chicago Style (17th ed.) Citation

Helder, Herberto. Photomaton & Vox. 6a ed. Porto Editora, 2015.

MLA (8th ed.) Citation

Helder, Herberto. Photomaton & Vox. 6a ed. Porto Editora, 2015.

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