APA (7th ed.) Citation

Parker, R. E. (1981). Once there was a Parker. R.E. Parker.

Chicago Style (17th ed.) Citation

Parker, Robert E. Once There Was a Parker. Moline, IL: R.E. Parker, 1981.

MLA (9th ed.) Citation

Parker, Robert E. Once There Was a Parker. R.E. Parker, 1981.