APA (7th ed.) Zitazioa

Solomon, C. R. (1971). Handbook of happiness. House of Solomon.

Chicago Style (17th ed.) Zitazioa

Solomon, Charles R. Handbook of Happiness. Denver: House of Solomon, 1971.

MLA (9th ed.) Zitazioa

Solomon, Charles R. Handbook of Happiness. House of Solomon, 1971.