Gaya APA

Riley, D, -, A. (1986). The Bedside, Bathtub & Armchair Companion to Agatha Christie (Cetakan Pertama: 1986). New York: Ungar Publishing Company.

Gaya MLA

Riley, Dick, -, A. "The Bedside, Bathtub & Armchair Companion to Agatha Christie". Cetakan Pertama: 1986 New York: Ungar Publishing Company, 1986. Text.