Cita APA

Sacks, A. J., & Singer, K. (2003). Kurt Singer's Shattered Hopes. Year-book.

Citación estilo Chicago

Sacks, Adam J., y Kurt Singer. "Kurt Singer's Shattered Hopes." Year-book 2003.

Cita MLA

Sacks, Adam J., y Kurt Singer. "Kurt Singer's Shattered Hopes." Year-book, 2003.