APA-ийн эшлэл(7 дахь хэвлэлт)
Rossman, I. (1970). Two children by choice: The why and who of the two-child family.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
Rossman, Isadore. Two Children by Choice: The Why and Who of the Two-child Family. 1970.
MLA -ийн эшлэл (9 дэх хэвлэлт)
Rossman, Isadore. Two Children by Choice: The Why and Who of the Two-child Family. 1970.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.