Cita APA (7a ed.)

Wolfe, A., & Helman, A. (1995). O is for orca: A Pacific Northwest alphabet book. Sasquatch Books.

Cita Chicago Style (17a ed.)

Wolfe, Art, y Andrea Helman. O Is for Orca: A Pacific Northwest Alphabet Book. Seattle: Sasquatch Books, 1995.

Cita MLA (8a ed.)

Wolfe, Art, y Andrea Helman. O Is for Orca: A Pacific Northwest Alphabet Book. Sasquatch Books, 1995.

Precaución: Estas citas no son 100% exactas.