APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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

警告：這些引文格式不一定是100％准確.