Cita APA (7a ed.)

Pettersson, S., & Valjakka, T. Helsinki is full of art.

Cita Chicago Style (17a ed.)

Pettersson, Susanna, y Timo Valjakka. Helsinki Is Full of Art.

Cita MLA (9a ed.)

Pettersson, Susanna, y Timo Valjakka. Helsinki Is Full of Art.