Cita APA (7a ed.)

Sherwood, E., & Sherwood, M. (1970). Ivan Pavlov. distributed by Heron Books.

Cita Chicago Style (17a ed.)

Sherwood, Elizabeth, y Martin Sherwood. Ivan Pavlov. [London]: distributed by Heron Books, 1970.

Cita MLA (9a ed.)

Sherwood, Elizabeth, y Martin Sherwood. Ivan Pavlov. distributed by Heron Books, 1970.