Eldritch Wizardry and the original Monster Manual.
Both describe Type V demons as "female demons".
I'd say 2e and 3e as well
MC8: "Terrible to behold, these creatures appear as half snake, half humanoid. From the waist down, these creatures have the bodies of giant snakes, with huge, green, scaly coils. From the waist up,
they are beautiful, comely females. Besides the obvious snake body, the feature that gives away the true nature of this tanar'ri is
her six arms."
Monstrous Manual is mostly the same description: "Terrible to behold, these creatures have the bodies of giant snakes, with huge, green, scaly coils. From the waist up,
they are beautiful, comely females. Besides
her obvious snake body, the feature that gives away the true nature of this tanar'ri is
her six arms."
Planescape MC: "Mariliths appear as half snake, half humanoid. From the waist down, these creatures have the bodies of giant snakes, with huge, green, scaly coils. Above the waist
they are beautiful, comely females."
3.0 MM: "Mariliths appear as giant snakes from the waist down with green, scaly coils, and
attractive female humanoids above the waist."
3.5 MM "This large, otherworldly entity
appears to be an attractive female human with six arms—at least from her head to her waist. From the waist down, the creature has the body of a massive snake with green, scaly coils."
4e is the first edition to not include such a reference in the monster entry text, leaving most physical description to the art as is 4e's wont.
4e MM: "THIS SIX-ARMED, SERPENTINE TERROR"
Monster Vault: "The serpentine, six-armed marilith"