APA

Keller J. G., . (1950). One moment please: Christopher daily guides to better living. Garden City, N.Y: Doubleday.

Chicago

Keller James Gregory, . 1950. One moment please: Christopher daily guides to better living. Garden City, N.Y: Doubleday.

Harvard

Keller J. G., . (1950). One moment please: Christopher daily guides to better living. Garden City, N.Y: Doubleday.

MLA

Keller James Gregory, . One moment please: Christopher daily guides to better living. Garden City, N.Y: Doubleday. 1950.