APA (7th ed.) Citation

Seuss, D. (1974). There's a wocket in my pocket! Collins.

Chicago Style (17th ed.) Citation

Seuss, Dr. There's a Wocket in My Pocket! [London]: Collins, 1974.

MLA (9th ed.) Citation

Seuss, Dr. There's a Wocket in My Pocket! Collins, 1974.