Cita APA (7a ed.)

Jupp, E. W. (2002). Boat watching. Intellect.

Cita Chicago Style (17a ed.)

Jupp, Edmund W. Boat Watching. Bristol, UK ; Portland, OR: Intellect, 2002.

Cita MLA (8a ed.)

Jupp, Edmund W. Boat Watching. Intellect, 2002.