Dyfyniad APA

Slepov, B. I. (1991). Petr Fedorovich Papkovich, 1887-1946. "Nauka," Leningradskoe otd-nie.

Dyfyniad Arddull Chicago

Slepov, B. I. Petr Fedorovich Papkovich, 1887-1946. Leningrad: "Nauka," Leningradskoe otd-nie, 1991.

Dyfyniad MLA

Slepov, B. I. Petr Fedorovich Papkovich, 1887-1946. "Nauka," Leningradskoe otd-nie, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.